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Standard VII

Mathematics

Inter Conversion between Standard and Normal Forms

: Blubber mak...

Question

Question 94:

Blubber makes up 27 per cent of a blue whale's body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. He wrote the amount as $2^{2} \times 3^{2} \times 5 \times 17 k g .$ Evaluate this amount.

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Solution

Weight calculated by Deepak= $2^{2} \times 3^{2} \times 5 \times 17 k g = 2 \times 2 \times 3 \times 3 \times 5 \times 17 = 4 \times 9 \times 5 \times 17 = 36 \times 5 \times 17 = 180 \times 17 = 3060 k g$
Hence, weight calculated by Deepak was 3060kg.

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Inter Conversion between Standard and Normal Forms

Standard VII Mathematics

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Question 94: Blubber makes up 27 per cent of a blue whale's body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. He wrote the amount as 22×32×5×17kg. Evaluate this amount.

Weight calculated by Deepak=22×32×5×17kg =2×2×3×3×5×17 =4×9×5×17 =36×5×17=180×17=3060kg Hence, weight calculated by Deepak was 3060kg.

Question 94:

Blubber makes up 27 per cent of a blue whale's body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. He wrote the amount as $2^{2} \times 3^{2} \times 5 \times 17 k g .$ Evaluate this amount.

Weight calculated by Deepak= $2^{2} \times 3^{2} \times 5 \times 17 k g = 2 \times 2 \times 3 \times 3 \times 5 \times 17 = 4 \times 9 \times 5 \times 17 = 36 \times 5 \times 17 = 180 \times 17 = 3060 k g$
Hence, weight calculated by Deepak was 3060kg.