Скачать или смотреть surface area and volume class 9 ncert solutions exercise 13.5 ||exercise 13.5 class 9 maths

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this video covers ncert exercise-13.5 question number 7,8 and 9

7. A godown measures 40 m × 25 m × 15 m. Find the maximum number of wooden crates
each measuring 1.5 m × 1.25 m × 0.5 m that can be stored in the godown.
8. A solid cube of side 12 cm is cut into eight cubes of equal volume. What will be the
side of the new cube? Also, find the ratio between their surface areas.
9. A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water
will fall into the sea in a minute?

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