Question

A floral design on the floor of a building consists of 280 tiles. Each tile is in the shape of a parallelogram of altitude 3cm and base 5cm. Find the cost of polishing the deign at the rate of 50paise per cm2

Answer 1

The cost of polishing the deign at the rate of 50 Rs per cm^2  is 210,000 Rs

Explanation:

• Find the area of 1 tile

Area of  parallelogram = base x height

area of 1 tile = 5 x 3 = 15 cm²

• Now  Find the area of 280 tiles

1 tile = 15 cm²

280 tiles = 15 x 280 = 4200 cm²

• Now Find the cost:

1 cm² = Rs 50

4200 x 50 =  210,000 Rs

Hence the cost of polishing the deign at the rate of 50 Rs per cm^2  is 210,000.

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Answer 2

Answer:

Explanation:

Area of  parallelogram = base x height

area of 1 tile = 5 x 3 = 15 cm²

Now  Find the area of 280 tiles

1 tile = 15 cm²

280 tiles = 15 x 280 = 4200 cm²

Now Find the cost:

1 cm² = Rs 50

4200 x 50 =  210,000 Rs

Hence the cost of polishing the deign at the rate of 50 Rs per cm^2  is 210,000.