Question

The length of a room is 3 times its width. If the width is 0.75 m, find its area. Also find the cost of flooring at the same rate of ₹45 per sq. m.

Answer 1

Question :

To find area of rectangle and the cost to flooring a room.

Solution :

• Given :

Width - 0.75 m

Length is 3 times it's width.( 3× width)

$\bf\underline{area \: of \: rectangle = l \times b}$

• L = length
• B = Breadth( width)

• Length = 3×0.75 = 2.25

⟹ Area = 2.25× 0.75 = 1.6875 m²

• To find cost of flooring :

$\bf\underline{ \: area \: \times rate \: of \: flooring \: per \: {m}^{2} }$

• Area = 1.6875 m²
• Cost of flooring per m² =Rs. 45

⟹ Cost of flooring = 1.6875 × 45 =Rs 75.9375