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lokiliddel
29.05.2020 •
Mathematics
A rectangular brick measures 18cm by 9cm by 6 cm. Find the number of bricks required to build a rectangular wall 4.5m wide, 18cm thick and 3.6m high.
please explain with details.
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Ответ:
volume of wall
Take note of units in meters. 1m = 100 cm
so we have 4.5 * 100 * 18 * 3.6 * 100 = 2,916,000 cm^3
So we divide the volume of wall by volume of brick to know how many bricks required
2,916,000/972 = 3,000 bricks
Ответ: