Question

in rectangular plot of land 70m long and 40m broad circular garden of radius 17. 5 m is developed. find the cost of turfing the remaining portion at the rate of rupee 28. 50 per sq. metre

Answer 1

rectangular plot total area
=l×b
= 70m ×40m
= 2800 m²

area of developed garden
= πr²
= 22/7×(17.5)²
= 962.5 m²

area of remaining portion
= total are of rectangular plot - area of circular garden
= 2800m² - 962.5 m²
= 1837.5 m²

cost of the remaining portion
1:1837.9::28.50:?
= 1837.9×28.50
= 52,368.75 rupees