Question

a verandah 1.25 m wide is constructed all along outside the room 5.5m long and 4 m wide. find the cost of cementing floor of verandah at rate of Rs 15 per sq.m.

Answer 1

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

Area of the room is given by 4×5.5 =22m^2
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
=30m^2
cost of cementing =15rps
total cost of cementing= 30×15
=450rps