Q.

How many pieces of plywood, each 0.45 cm thick, are required to make a pile 2.43 m high?


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a

540

b

220

c

234

d

872 

answer is A.

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Detailed Solution

Given,
Thickness of total plywood = 2.43 m and thickness of one plywood = 0.45 cm.
Converting 2.43 m into centimeter.
=2.43 ×100=243 cm Thickness of one plywood = 0.45 cm.
Number of pieces of plywood is,
=Thickness of the pile of plywoodsThickness of one piece of plywood =243×1000.45×100=2430045=540
The number of pieces of plywood is 540.
Hence option 1 is correct.
 
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How many pieces of plywood, each 0.45 cm thick, are required to make a pile 2.43 m high?