Question

hi freinds a room is 5mby 4m . find the cost of cementing its floor at ₹7.50 per m^2.​

Answer 1

Step-by-step explanation:

Area of a room = L×B = 5 × 4 = 20m²

Cost of cementing 1 m² = 7.50

Cost of cementing 20 m² = 7.50 × 20 = 140

Answer 2

Total cost of cementing= Area of the floor × cost of cement per m^

Now,

We know that,

Area of rectangular floor= l × b,

--→ (5×4) m^2= 20 m ^2

So,

Total cost of cementing

--→ 20 × Rs. 7.50= Rs. 150

Hope it helps......