# Math

The perimeter of a semicircle is 72 cm. Find the raduis of the semicircle and then find its area

Consider the full circle: perimeter 144

radius= perimetercircle/2PI

areacircle= PI*rad^2
areasemicircle= 1/2 area circle

1. 👍 0
2. 👎 0
3. 👁 75

## Similar Questions

1. ### calculas

find the perimeter of the rectangle with maximum area that can be inscribed in a semicircle of radius 2 ft. if two of its vertices are on the diameter of the semicircle and the other two are on the semicircle.

asked by Anonymous on December 7, 2010
2. ### Geometry

Find the perimeter of a region bounded on three sides by a rectangle with a base of 600 ft and a height of 800 ft and bounded above by a semicircle with a radius of 300 ft. Use the approximation π = 3.14. (Do not include the

asked by Juanita on March 7, 2017
3. ### Math

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 24 ft, find the value of x so that the

asked by Ashleigh on November 14, 2011
4. ### Calculus 2

how do I find the fluid force of a vertical semicircle that has been divided into three equal sectors of 60 degrees each. I know what the equation to find the fluid force for the whole semicircle is. but how do I find L(y) for

asked by Laura on October 11, 2012
5. ### Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 25 ft, find the dimensions of the window so

asked by Nate on November 18, 2013
6. ### Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 20 ft, find the dimensions of the window so

asked by Emily on November 26, 2017
7. ### Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 20 ft, find the dimensions of the window so

asked by Anonymous on November 26, 2017
8. ### Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 30ft, find the dimensions of the window so

asked by Anonymous on November 5, 2011
9. ### Math

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 30 ft, find the dimensions of the window so

asked by Lenny on November 23, 2013
10. ### Calculus

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 31 feet? A =

asked by Ryan kustin on April 17, 2015

More Similar Questions