Question

A floor design on a floor of a room is made up of 8 triangular tiles , the sides of the triangle

being 15 cm , 5 cm and 12 cm. Find the cost of polishing the tiles at the rate of Rs. 1.50 per

cm²​

Answer 1

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cm

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cmTotal area of all the 16 triangles

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cmTotal area of all the 16 triangles= (16 x 88.2) cm² = 1411.2 cm² (approx.)

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cmTotal area of all the 16 triangles= (16 x 88.2) cm² = 1411.2 cm² (approx.)Rate of polishing = ₹0.5 per cm²

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cmTotal area of all the 16 triangles= (16 x 88.2) cm² = 1411.2 cm² (approx.)Rate of polishing = ₹0.5 per cm²Therefore, Cost of polishing all the tiles

Sides of the triangle are a = 9 cm, b = 28 cm, c = 35 cmTotal area of all the 16 triangles= (16 x 88.2) cm² = 1411.2 cm² (approx.)Rate of polishing = ₹0.5 per cm²Therefore, Cost of polishing all the tiles= ₹ (0.5 x 1411.2) = ₹ 705.60 (approx.)

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