Question

5/6 of a class of 60 students study mathematics and 3/5 studys Economics. Every students studies atlest one of these both subjects?.

A trapezium of 10cm,12cm and height 8cm is inscribed in a circle of radius 7cm. Calculate the area of the region not occupied by the trapezium.(Take π= 3.142).

Answer 1

minimum 50 student studies in which all 50 are of maths and in that 36 of economics also