NCERT Solutions for Class 9 Maths Chapter 13
Important NCERT Questions
Surface Areas and Volumes
NCERT Books for Session 2022-2023
CBSE Board, UP Board and Other state Boards
EXERCISE 13.5
Page No:228
Questions No:7
A godown measures 40 m × 25 m × 10 m. Find the maximum number of wooden crates each measuring 1.5 m × 1.25 m × 0.5 m that can be stored in the godown.
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Length of godown L = 40 m, breadth B = 25 m and height H = 15 m
Volume of godown = LBH = 40 × 25 × 15 = 15000 m³
Length of crate l = 1.5 m, breadth b = 1.25 m and height h = 0.5 m
Volume of crate = lbh = 1.5 × 1.25 × 0.5 = 0.9375 m³
Now,
Number of crates to be stored in godown = Volume of godown/Volume of 1crate
= 15000 m³/0.9375 m³ = 10666.67
Hence, maximum of 10666 crates can be placed in the godown.