Question

Work out the area of this semicircle.

Take a to be 3.142 and give your answer to 2 decimal places.
10 cm
Area of a Circle

Answer 1

Area of semi circle = 1/2 ×πr²

π = 3.142 and r = if 10cm

Area = 1/2 × 3.142 × 10²

Area = 1/2 × 3.142 × 100

Area = 3.142 × 50

Area = 157.10cm²

Explanation: