Question

Work out the area of this semicircle take pie to be 3.142 and write down all the digits given by your calculator 18cm

Answer 1

Answer: 125.251

Explanation:

Answer 2

509.004 cm²

Explanation:

A = π·r²/2

= 3.142·18²/2

= 3.142·324/2

= 3.142·162

= 509.004 cm²