Question

the radius of a circle is 7cms the angle sub tended by an arc of the corcle at centre is 45 degress find the area of the sector​

Answer 1

Answer:

Given,

Radius = 7cm

Theta = 45°

We know that,

∴ Area = πr²

           = π(7)²

           = 49π

We also know that,

Area of sector = $\frac{thetha}{360}$ × πr²

                        = $\frac{45}{360}$ × 49π

                       = 19.2 cm²

           Hope it helps you^_^