What is the area of a circle with radius 60 feet?

Result: The area of a circle with radius 60 is 11310
Formulae:
r = 60 d = 120 C = 377 A =

πr

2

= π(d2)

2

A = C

2

4π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter

Also, How do you measure a circle?

The formula is: circumference = pi times the diameter. For most projects, 3.14 can be used as the value for pi. Rewriting the equation, the circumference = 3.14 X diameter. For example, a circle with a diameter of 6 inches has an approximate circumference of 18.84 inches.

Hereof, What is the radius of a 30 ft circle?

Diameter of a Circle

Diameter ft m
30′0″ 94.25
28.73
30′1″ 94.51 28.81
30′2″ 94.77 28.89
30′3″ 95.03 28.97

Also to know How do you measure inches in a circle? You can calculate the circle’s circumference in inches with pi in the equations circumference = 2 * radius * pi and circumference = diameter * pi. Locate the circle’s center, and measure the length from its center to a point on its edge to find the radius. For an example, suppose the measurement is 5 inches.

What is the symbol for pi?

pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol π was devised by British mathematician William Jones in 1706 to represent the ratio and was later popularized by Swiss mathematician Leonhard Euler.

## What tool makes a perfect circle?

A compass is the traditional tool for drawing precise circles, and its sharp point acts as a pivot.

## How do you find the radius?

How to Find the Radius of a Circle?

1. When the diameter is known, the formula for the radius of a circle is: Radius = Diameter / 2.
2. When the circumference is known, the formula for the radius is: Radius = Circumference / 2π
3. When the area is known, the formula for the radius is: Radius = ⎷(Area of the circle / π)

## How do you find the radius with the diameter?

Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.

## How do you find the radius when given the area?

To find the radius, divide the area by pi, then take the square root.

## What is length formula?

Formulas for Arc Length

Arc Length Formula (if θ is in degrees)
s = 2 π r (θ/360°)
Arc Length Formula (if θ is in radians) s = ϴ × r
Arc Length Formula in Integral Form s= int^{b}_asqrt{1+(frac{dy}{dx})^2}dx

## How long is the diameter of the circle?

The diameter is the length of the line through the center that touches two points on the edge of the circle.

## What is the formula for pi?

The formula for the value of pi is the ratio of the circumference of a circle to its diameter. In the ratio form, it is π = Circumference/Diameter.

## Does iPhone have a pi symbol?

Add a Greek keyboard to your iPhone to enable access to the letter Pi. Now that you’ve got the Greek keyboard available, simply switch to it by tapping the Globe icon down in the lower-left corner of your iOS keyboard and, when you cycle through to Greek, tap π! … Or, well, Happy π Day!

## Why pi is used in circle?

The symbol π comes from the Greek letter π, because the Greek word for “periphery” begins with the Greek letter π. The periphery of a circle was the precursor to the perimeter of a circle, which today we call circumference.

## Which tool is used to draw a straight line?

Answer:Ruler is used to draw straight line.

## What is the secret in drawing a perfect circle?

The Secret to Drawing Great Circles. We have to move all the way up to the shoulder to see the range of movement required to draw a circle. The shoulder is a ball in socket joint. This type of connection allows for a broader range of movement.

## What do architects use to draw circles?

Compass. Compasses are used for drawing circles or arc segments of circles. One form has two straight legs joined by a hinge; one leg has a sharp pivot point and the other has a holder for a technical pen or pencil.

## Is around the perimeter?

Perimeter is the distance around the edge of a shape. Learn how to find the perimeter by adding up the side lengths of various shapes.

## What is the radius of a 22 inch circle?

r = 22 / (2 * 3.1) = 3.55 That’s accurate enough. , where is the circumference and is the radius. So, the exact value of the radius of the circle is .

## What is the formula of radius and diameter?

The formula for the radius can be written as r=d2, and the formula for diameter can be written as d=2r.

## Is a radius half the diameter?

The radius of a circle is the length of the line segment from the center of a circle to a point on the circumference of the circle and diameter is a line segment from one end of the circle to the other end of the circle passing through the center of the circle. So, the radius is half the length of the diameter.

## What is the radius of the diameter is 24?

If it is its diameter, then we must do a little calculation, multiplying the diameter by Pi to reach 75.40 inches. If it is its radius then we must multiply the previous result by 2 to reach 150.80 inches. If the diameter of the round pool is 24 ft, then its radius is 12 ft.

## What is area formula?

Given a rectangle with length l and width w, the formula for the area is: A = lw (rectangle). That is, the area of the rectangle is the length multiplied by the width. As a special case, as l = w in the case of a square, the area of a square with side length s is given by the formula: A = s2 (square).

## What’s the square root of a circle?

But assuming a circle is represented by the equation x2 + y2 = r2 , the square root is equivalent to sqrt{r2 } = r .

## What is the radius of the given circle?

Given the radius of a circle calculate the area, circumference and diameter. Putting A, C and d in terms of r the equations are: A=πr2. C=2πr.