General Mathematics Paper 2, WASSCE (PC), 2016

Question 5

 

                         

The diagram shows a semi-circular arc on a school gate with a shaded segment BCD. If |AE| = 14 metres and ∠AOB = ∠DOE 45o, calculate the cost of painting the shaded portion at the rate of ₦ 750.00 per square metre (m2). [Take  = ].

Observation