Question

A chord of a circle of radius 14 cm makes a right angle at the centre. Find the area of the sector.  

Answer 1

Let r cm be the radius of the circle and θ be the angle.

We have:

r = 14 cm and θ = 90°

Area of the sector `=(pi"r"^2theta)/360`

`=(22/7xx14xx14xx90/360) "cm"^2`

= 154 cm²