Question

What is the area of a semicircle that has a diameter of 22mm? (Using 3.14 for pi)a.) 69.08 mm squaredb.) 138.16 mm squaredc.) 150.72 mm squared d.) 189.97 mm squared

Answer 1

Let's find the area of a semicircle, remember the formula for that

But remember that we only have a semicircle which is the middle of one circle, so the formula is :

We know that the diameter is 22mm so the radio is 11 mm

The answer to the question is d.