Question

The diameter of a semicircle is 2 millimeters. What is the semicircle's area?

Answer 1

Given that,

The diameter of a semicircle is 2 mm.

To find,

The area of the semicircle.

Solution,

Radius of semicircle, r = 1 mm

The area of a semicircle is given by the formula as follow :

$A=\dfrac{\pi r^2}{2}\\\\=\dfrac{3.14\times (1)}{2}\\\\=1.57\ \text{mm}^2$

So, the area of the semicircle is $1.57\ \text{mm}^2$.