Question

a rectangular plot of land measures 95 m by 72 m broad. Inside the plot ,a path of uniform width of 3.5 m is to be constructed all around. The rest of the plot is to be laid with grass. Find the total expenses involved in constructing the path at Rs 80 per m2 and laying the grass at Rs 40 per m2.(mensuration)

Answer 1

area of plot = 95×72
= 6840 cm
area in which grass is laid = (95-3.5) × (72-3.5)
= 91.5 × 68.5
=6267.75
cost=6267.75×40
= 250716
area of path=6840-6267.75
=572.25
cost=45780