Question

A circular swimming pool has protection bars installed along the circumference of 220 meters. Find the radius of the swimming pool.

• A. 21 m
• B. 30 m
• C. 35 m
• D. 70 m

Answer 1

The correct option is C

35 m

Circumference of a circle with radius r = $2\pi r$

Here, circumference of the swimming pool = $220m^2$

$\Rightarrow 2\times \left(\frac{22}{7}\right)\times r=220$
(Assuming r is the radius of the pool)

$\Rightarrow$ $r=35m$

Therefore, radius of the swimming pool is 35 m.