A railing of 288 m is required forfencing a semi-circular park. Find t

1.	A railing of 288 m is required forfencing a semi-circular park. Find thearea of the park. (take 22/ 7)Ssc Multitasking 2014]
Answer» Railing length for fencing semicircular Park = 288 m Let radius of semicircular Park = r Then,Pir + r = 288r(22/7 + 2) = 288r = 2887/36r = 87 = 56 m Area of semicircular park= 1/2pirr= 1/222/75656= 118*56= 4928 m^2

A railing of 288 m is required forfencing a semi-circular park. Find thearea of the park. (take 22/ 7)Ssc Multitasking 2014]

Answer»

Railing length for fencing semicircular Park = 288 m

Let radius of semicircular Park = r

Then,Pi*r + r = 288r(22/7 + 2) = 288r = 288*7/36r = 8*7 = 56 m

Area of semicircular park= 1/2*pi*r*r= 1/2*22/7*56*56= 11*8*56= 4928 m^2