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 if ₹15 per sq m.​

Answer 1

Answer:

Area of the room is given by 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 only verandah = 52 - 22 = 30m2

Cost of cementing the floor of the verandah = 15 Rs/m2

Total cost of cementing 30m2 verandah = 30 * 15 = 450 Rs

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.