Question

find the diameter of a semicircle whose area is 100.48 cm square

Answer 1

Area of hemisphere=pi.r^2/2
r^2 =(100.48×2)/3.14

r= 8
radius of the hemisphere=8
diameter of the hemisphere=16

Answer 2

The diameter is 16 cm.

Step-by-step explanation:

Given : A semicircle whose area is 100.48 cm square.

To find : The diameter of a semicircle ?

Solution :

The area of the semicircle is given by,

$A=\frac{\pi r^2}{2}$

Here, A=100.48 cm² is the area

r is the radius

$100.48=\frac{3.14\times r^2}{2}$

$200.96=3.14\times r^2$

$r^2=\frac{200.96}{3.14}$

$r^2=64$

$r=\sqrt{64}$

$r=8$

The radius is 8 cm.

The diameter is $d=2r$

$d=2(8)$

$d=16\ cm$

The diameter is 16 cm.

#Learn more

Find the perimeter of a semicircle if the radius is 15 cm and also find the diameter of the semicircle​

https://brainly.in/question/9814848