RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)

Subject: Maths - Class 8th

Q. No. 10 of Exercise 21.2

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10

How many planks each of which is 3 m long, 15 cm broad and 5 cm thick can be prepared from a wooden block 6 m long., 75 cm broad and 45 cm thick?

Given,


Dimensions of one plank = 3m × 15cm × 5cm = 300cm ×15cm×5cm


Dimensions of wooden block = 6m × 75cm ×45 cm = 600 cm×75 cm×45cm


So,


No. of planks can be made = = = 90 planks


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