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Perimeter of N Sided Regular Polygon

Estimate the ...

Question

Estimate the length of one pencil.

A

10 cm

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B

20 cm

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C

30 cm

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D

40 cm

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Solution

The correct option is B 20 cm
We can round off the length of an eraser 8 cm length can be rounded
off to 10 cm
So according to the given image two pencils are
10+10+10+10 cm = 40 cm length
So two pencils = 40 cm
one pencil = 40 cm ÷ 2
= 20 cm

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