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The circumference of a semicircle is 30.28 cm. What is its area Hurry, hurry, hurry, hurry, hurry, hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Let the radius of the circle be r
The circumference of the circle is 2 π R, the half circumference is 2 π R / 2 = π R
Semicircle circumference = semicircle + diameter
30.28=πr+2r
R = 30.28 / (2 + π) = 5.8892cm
So the area of the semicircle is π R & sup2 / 2 = π * 5.8892 & sup2 / 2
=54.479 square centimeters
If the radius of a circle is increased from 8 cm to 10 cm, how many cm has the circumference of the circle increased? How many square centimeters has the area increased
The perimeter increased by 12.56 and the area increased by 100.48
I'm on a mission,
The radius of the semicircle is 8 cm. What is the circumference of the semicircle? If the circumference of the semicircle is 82.24 cm, what is the area of the semicircle?
The circumference of the semicircle = 1 / 2, the circumference of the whole circle + the diameter of the semicircle = π R + 2R = (π + 2) r = 8 (π + 2) ≈ 41.12 (CM), so the circumference of the semicircle is 41.12 cm
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