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Gekata [30.6K]
3 years ago
9

If the volume of the expanding cube is increasing at the rate 24 cm3 / min , how fast is its surface area increasing when the su

rface area is 216 cm2 ?​
Mathematics
1 answer:
Georgia [21]3 years ago
7 0

Answer:

16 cm^2/min

Step-by-step explanation:

dV/dt=24

V=a^3, differentiate with respect to t

dV/dt=3a^2*da/dt, a^2*da/dt=8

S=6a^2, 216=6a^2. a=6. da/dt=(8/36)

dS/dt=12*a*da/dt=12*(8/6)=16 cm^2/min

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3 years ago
There are 6 rectangular flower gardens each measuring 18 feet by 17 feet in a rectangular city park measuring 80 feet by 160 fee
Aneli [31]

The area which is not in used for the flower gardens is 10964 sq ft.

Step-by-step explanation:

Given,

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Formula

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4 0
3 years ago
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So no other number can go into 4 and 9x again.

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Hope this explains it.
8 0
3 years ago
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5 0
3 years ago
Read 2 more answers
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