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

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Solution

We have,
Altitude of a tile = 3 cm
Base of a tile = 5 cm
Area of one tile = Altitude x Base = 5 cm x 3 cm = 15 cm²
Area of 280 tiles = 280 x 15 cm² = 4200 cm²
Rate of polishing the tiles at 50 paise per cm² = Rs. 0.5 per cm²
Thus,
Total cost of polishing the design = Rs. (4200 x 0.5) = Rs. 2100

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

We have, Altitude of a tile = 3 cm Base of a tile = 5 cm Area of one tile = Altitude x Base = 5 cm x 3 cm = 15 cm2 Area of 280 tiles = 280 x 15 cm2 = 4200 cm2 Rate of polishing the tiles at 50 paise per cm2 = Rs. 0.5 per cm2 Thus, Total cost of polishing the design = Rs. (4200 x 0.5) = Rs. 2100

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