A street lane is to be paved with bricks. The length of the lane is 240 m and its breadth is 12 m. Find the number of bricks required to pave the lane if each brick measures 22.5 cm by 10 cm .
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Let total no. of bricks(22.5 cm ×10 cm) = 'n'
Area acquired by a brick = 22.5 × 10 = 225 cm² = 0.0225 m²
Area of the street lane = (length)×(breadth)
= 240 × 12 m²
A/q,
Total area of the lane = n×(area of 1 brick)
⇒ 240 ×12 =n(0.0225)
⇒ n = (240×12×10000)/225
⇒ n = 128000
Total no. of bricks required to pave the whole lane = 128000
Area acquired by a brick = 22.5 × 10 = 225 cm² = 0.0225 m²
Area of the street lane = (length)×(breadth)
= 240 × 12 m²
A/q,
Total area of the lane = n×(area of 1 brick)
⇒ 240 ×12 =n(0.0225)
⇒ n = (240×12×10000)/225
⇒ n = 128000
Total no. of bricks required to pave the whole lane = 128000
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