3. A verandah 1.25 m wide is constructed all along the outside of a ro

1.	3. A verandah 1.25 m wide is constructed all along the outside of a room 5.5 m long and 4 m wide. Findthe cost of cementing the floor of this verandah at the rate of15 per sq m.
Answer» 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 only verandah = 52 - 22 = 30m2 Cost of cementing the floor of the verandah = 15 Rs/m^2 Total cost of cementing 30m2 verandah = 30 * 15 = 450 Rs

3. A verandah 1.25 m wide is constructed all along the outside of a room 5.5 m long and 4 m wide. Findthe cost of cementing the floor of this verandah at the rate of15 per sq m.

Answer»

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 only verandah = 52 - 22 = 30m2

Cost of cementing the floor of the verandah = 15 Rs/m^2

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