Dimensions 4142

The area is 5m x 59dm. How many boards will it need if one board has 30cm x 37 cm dimensions?

Correct answer:

n =  266

Step-by-step explanation:

a=5 m b=59 dm→ m=59:10  m=5.9 m c=30 cm→ m=30:100  m=0.3 m d=37 cm→ m=37:100  m=0.37 m  S1​=a⋅ b=5⋅ 5.9=259​=2921​=29.5 m2 S2​=c⋅ d=0.3⋅ 0.37=1000111​=0.111 m2  n=⌈S1​/S2​⌉=⌈29.5/0.111⌉=266

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arithmeticplanimetricsUnits of physical quantitiesGrade of the word problem

 
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