Water runs from a tap at 220 cm³ per second into an empty frustum-shaped bucket whose end radii are 18 cm and 8 cm and whose depth is 15 cm. How many seconds does it take to fill the bucket? (Take \π = 22/7 .)

Question

Accepted Answer

38 s. V = 1/3 × 22/7 × 15 × (324 + 64 + 144) = 22/7 × 5 × 532 = 8360 cm³. Time = 8360/220 = 38 s. 27.71 s drops the Rr term; 114 s forgets the 1/3 ; 0.038 s converts the volume to 8.36 litres but keeps dividing by a rate given in cm³.

Water runs from a tap at $220 cm^{3}$ per second into an empty frustum-shaped bucket whose end radii are 18 cm and 8 cm and whose depth is 15 cm. How many seconds does it take to fill the bucket? (Take $π = \frac{22}{7} .$ )

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More Class 10 Frustum of a Cone practice

Water runs from a tap at 220cm3 per second into an empty frustum-shaped bucket whose end radii are 18 cm and 8 cm and whose depth is 15 cm. How many seconds does it take to fill the bucket? (Take π=722​.)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Frustum of a Cone practice

Water runs from a tap at $220 cm^{3}$ per second into an empty frustum-shaped bucket whose end radii are 18 cm and 8 cm and whose depth is 15 cm. How many seconds does it take to fill the bucket? (Take $π = \frac{22}{7} .$ )