Q: How do you find the perimeter of a semicircle with radius 7?

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Depth of cone = Radius of semicircle = 28/2 cm = 14 cm Circumference of the base of cone = Arc of semicircle = 0.5*pi*28 = 14*pi cm Therefore radius of base = 14*pi/(2*pi) = 7 cm Capacity = 1/3*pi*r2*h where r is the radius of the base of the cone. = 1/3*pi*72*14 = 718 cm3

To find the perimeter we add all the sides together: 6+6+7+7=26m

The radius is 7 meters.

The perimeter is 7 cm

the formula is PI(3.14)(radius)squared first is to find the radius they usually give and you like the fullthing so you have to cut it in half like for example the radius is 14 so you cut in half which is 7.next you take 7 and multiply it by itself which is 49.(be sure to NOT multiply 7x2=14)then you multiply everything together.so here it is.(3.14x49)And that's how you find the radius of a circle.(i think....)

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Pi times the diameter gives you the circumference. Then divide that answer by two. Then add in the diameter - and, voila, you have your answer as to the perimeter of a semicircle.

perimeter or circumference = 2*pi*7 m

The area of a circle is pi*r2, where r is the radius. In this case, 22/7 will be used for pi. Area of a semicircle: A semicircle is half of a circle, so the area will be half of a circle: A = (1/2)*pi*r2 Example: Find the area of a semicircle with a radius of 10 meters. A = (1/2)*(22/7)*(10)2 = (1/2)*(22/7)*(100) = 1100/7 or about 157.14 square meters Area of a quarter circle: A quarter circle is a forth of a circle, so the area will be A = (1/4)*(pi)*r2 Example: Find the area of a quarter circle with a diameter of 4 inches: (Notice that the diameter is given, so the radius in this case is 2 inches:) A = (1/2)*(22/7)*(22) = (1/2)*(22/7)*4 = 44/7 or about 6.286 square inches.

if perimeter of cd=377mm perimeter of circle cd=2x22/7xr Using pie as 22/7 radius=> 2x22/7xr=377mm r= 120.0636943 r= 60.03184713mm -Keran Persaud Basiram

To find the perimeter of a rectangle simply add the length and width then double your answer.

Perimeter = 12+12+7+7 = 38 inches

The perimeter of a circle is the same as it's circumference. To find this, you will need to know it's radius or diameter.For example, if the diameter of a circle is 7, you could do: pi times the diameter (which is 7), or, if you want to, you could half it and have; 2 times pi times 3.5. It doesn't matter which way you have it, you will still get the same answer if it is halved correctly.

Depth of cone = Radius of semicircle = 28/2 cm = 14 cm Circumference of the base of cone = Arc of semicircle = 0.5*pi*28 = 14*pi cm Therefore radius of base = 14*pi/(2*pi) = 7 cm Capacity = 1/3*pi*r2*h where r is the radius of the base of the cone. = 1/3*pi*72*14 = 718 cm3

Pie/2=22/7/2Angle in radians =Total length of the arc/radius of the circle

To find the perimeter we add all the sides together: 6+6+7+7=26m

Calculate perimeteter of the semicircle then divide mathematically by seven using a calculator and then using that value and a divider or compass divide the semicircle.......

14(22/7+2) =2(22+2) =44+4 =48