Question

find the perimeter and area of semicircle ,which is a diameter ,is 10 cm .
who will give the correct answer I'll mark him/her as brainliest​

Answer 1

Answer:

Perimeter of that circle is 22/7*10

perimeter of that semicircle is (22/7*10)/2 =  15.71

Step-by-step explanation:

Area of that circle is 22/7 * 5* 5

Area of that semi circle is (22/7 * 5 * 5)/2 = 39.28

Answer 2

Answer:

Perimeter of the semicircle $=25\frac{5}{7}cm$

Area of the semicircle $= 157\frac{1}{7} cm^2$

Step-by-step explanation:

Diameter, d is 10 cm.

Perimeter of the semicircle = $\frac{1}{2}$πd + d

$=10(\frac{22}{2 . 7} + 1)cm$ $=10(\frac{11 + 7}{7})cm$ $=\frac{180}{7}cm$ $=25\frac{5}{7}cm$

Area of the semicircle $=\frac{1}{2}$π$(\frac{d}{2} )^2$

$=\frac{22 . 100}{2 . 7} cm^2$ $= 157\frac{1}{7} cm^2$