Question

A classroom is 7 m long, 6m broad and 3.5 m high. Doors and windows occupy an area of 17 m square. Find the cost of whitewashing the walls, excluding the doors and windows, at the rate of Rs.15 per m square

Answer 1

is the ans 45???? if yes thn i cn snd u d solution

Answer 2

area of wall=2(bh+lh)

=2(7×3.5+6×3.5)

=2(24.5+21)

=2(45.5)

=91

area of wall without doors and windows=91-17

=74

cost of whitewashing=74×15

=₹1110