Mohan is a farmer. He has a rectangular field of length 65m and width15m. He digs a circular flower bed of radius of 7m at the field( π=22/7 ). a) Find the area of the flower bed. b) Find the area of the remaining portion of the field. c) Find the cost of levelling the remaining field at the rate of ₹5 per sq m.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Ithink it is 52