A postage stamp is $12 m m$ in breadth and $20 m m$ in length. Find the area of stamp in $c m^{2}$

0.24

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240

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24

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2.4

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Solution

The correct option is C $2.4$
As we know that,
$1 c m = 10 m m$
So, $1 m m = 0.1 c m$

Given:-
Length $= 20 m m$
$= 20 \times 0.1 c m$
$= 2 c m$
Breadth $= 12 m m$
$= 12 \times 0.1 c m$
$= 1.2 c m$

Area of stamp $=$ Length $\times$ Breadth
$= 2 \times 1.2$
$= 2.4 c m^{2}$

Hence, option $D$ is correct.

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A postage stamp is 12 mm in breadth and 20 mm in length. Find the area of stamp in cm2

The correct option is C 2.4As we know that,1 cm=10 mmSo, 1 mm=0.1 cmGiven:-Length =20 mm =20×0.1 cm =2 cmBreadth =12 mm =12×0.1 cm =1.2 cmArea of stamp = Length × Breadth =2×1.2 =2.4 cm2Hence, option D is correct.

A postage stamp is $12 m m$ in breadth and $20 m m$ in length. Find the area of stamp in $c m^{2}$