How many bits of 10 cm - 15 cm can be cut out of a paper sheet of size 2-5 m - 3m-

[ Area of paper =2.5× 3=7.5 m^ 2; Area of bits = 10× 15=150c m^ 2; ...

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Standard VI

Mathematics

Area of Rectangle

How many bits...

Question

How many bits of 10 cm $\times 15 c m$ can be cut out of a paper sheet of size 2.5 m $\times 3$ m.

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Solution

$\begin{matrix} A r e a o f p a p e r = 2.5 \times 3 = 7.5 m^{2} A r e a o f b i t s = 10 \times 15 = 150 c m^{2} = \frac{150}{10^{4}} m^{2} N o o f b i t s t h a t c a n b e p u t o n p a p e r = \frac{7.5 \times 10^{4}}{150} = \frac{75 \times 10^{3}}{150} = \frac{75 \times 10^{2}}{15} = 500 H e n c e, 500 b i t s c a n b e c u t o u t o f a p a p e r s h e e t . \end{matrix}$

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How many bits of 10 cm ×15cm can be cut out of a paper sheet of size 2.5 m ×3m.

Areaofpaper=2.5×3=7.5m2Areaofbits=10×15=150cm2=150104m2Noofbitsthatcanbeputonpaper=7.5×104150=75×103150=75×10215=500Hence,500bitscanbecutoutofapapersheet.

How many bits of 10 cm $\times 15 c m$ can be cut out of a paper sheet of size 2.5 m $\times 3$ m.