Answer:
24 m
Step-by-step explanation:
Area of a semi-circle = πr^2 ÷ 2
226.19 = (3.14 × r^2) ÷ 2
Multiply both sides by 2
452.38 = 3.14 × r^2
Divide both sides by 3.14
r^2 = 144.0700
Take square roots of both sides
r = √144.0700
r = radius = 12.0029
Diameter = 2 × radius
= 2 × 12.0029
= 24.0058
= 24 m
