Question

A Verandah 1.25 m wide is constructed all along the outside of a room 5.5 m long and 4 m wide. Find the cost of cementing the floor of this verandah at the rate of Rain 15 per square meter

Answer 1

Since the verandah is of width ,outer length of room =5.5+2(1.25)=7m
width of the room=4+2(1.25)=4+2.5=6.5
So Area of the verandah= Outer area-Inner area
                                       =7x6.5-5.5x4
                                       =45.5-22=23.5
Cost of cementing at 15 per sq m=23.5X15=Rs 352.50

Answer 2

Given that,

Area of the room is 4×5.5=22m²

Area of the verandah with room is =(5.5+1.25+1.25)×(4+1.25+1.25)

8×6.5=52

Area of verandah 52−22

=30m²

Cost of cementing =15rps

Total cost of cementing =30×15

=450rps

Thus,

We get total cost of cementing 450rps.