How many envelopes can be made out of a sheet of paper 3 m 24 cm by 1 m 72 cm , if each envelope requires a piece of paper of size 18 cm by 12 cm ?
Answers
Answer:
Step-by-step explanation :- Total length of the sheet = 3m 24 cm(342 cm)
Total breadth of the sheet=1m 72cm(172cm)
Total area :- 342 cm × 172 cm = 55728
Area that per envelope requires = (l×b)=18 cm ×12cm=216 cm
So, total number of envelope which can be made out of 324 cm by 172 cm sheet of paper = 55728÷216
=258
Given : a sheet of paper of size 3 m 24 cm × 1 m 72 cm
To Find : Number of envelopes can be made of size 18 cm × 12 cm
Solution:
a sheet of paper of size 3 m 25 cm × 1 m 72 cm
3 m 24 cm = 324 cm
1 m 72 cm = 172 cm
Area = 324 x 172
Envelop size = 18 * 12 cm
Using direct area formula = 324 x 172 / 18 * 12 = 258 envelopes
But actually
324 / 18 = 18
172 / 12 = 14.33 =14 ( as has to be integer )
Hence envelopes = 18 * 14 = 252 envelopes
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