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nordsb [41]
3 years ago
14

The area of a circle, in terms of

Mathematics
1 answer:
ch4aika [34]3 years ago
3 0

Answer:

30m

Step-by-step explanation:

A=πr²

225π=πr²

225=r²

r=√225

r=15

d=2r

d=2×15

=30m

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Water is leaking out of an inverted conical tank at a rate of 6800 cubic centimeters per min at the same time that water is bein
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Answer:

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Step-by-step explanation:

Given that, the height of the conical tank is 13 meters and diameter is 3 meters.

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\therefore \frac{radius }{height}=\frac {\frac{3}{2}}{13}

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\frac{dV}{dt}=\frac{3}{676}\pi .3h^2 \frac{dh}{dt}

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\frac{dV}{dt}=\frac{9}{676}\pi h^2 \times 17

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=(7,113+6,800)cubic centimetre per minute

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