Question

a design on a wall of room consists of 1000 tiles of the shape of parallelogram if altitude and base of its tiles is 3 cm 4 cm respectively find the cost of polishing the design at the rate of Rs 9.5 per decametre

Answer 1

The area of one tile is 3*4
=12
for 1000 tiles is 12000
12000cm2=0.012decametre
cost is 0.012*9.5=0.114rs