Question

Work out the area of this circle.

Take pie to be 3.142 and write down all the digits given by your calculator.

Answer 1

314.2

Explanation:

Multiply the diameter by pi

Answer 2

Area = 314.2 cm²

Explanation:

Area of a circle = πr²

π = 3.142

r = 10 cm

Area of the circle = 3.142 × 10²

Area = 3.142 × 100

Area = 314.2 cm²