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4 years ago

The radius of a sphere-shaped balloon increases at a rate of 2 centimeters (cm) per second. If the surface area of

Mathematics

1 answer:

djverab [1.8K]4 years ago

5 0

Answer:

7 seconds

Step-by-step explanation:

The radius of a sphere-shaped balloon increases at a rate of 2 centimeters (cm) per second.

surface area of the completely inflated balloon is 784 cm²

SA=4r²

784= 4r²

784/4= r²

196 = r²

14cm = r

Yhe radius of the complete inflated balloon is 14cm

If the ball inflate at the rate of 2 cm per seconds

Then it took 14/2 = 7 seconds to inflate fully

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3 years ago

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3 years ago

Read 2 more answers

This is about scientific notation. Can someone plzzzz help I’m confused

MariettaO [177]

Answer: Carat

Step-by-step explanation:

It is given that 1 atomic unit is equivalent to

$8.3\times 10^{-24}\ \text{carat}$ and $1.66\times 10^{-21}\ mg$

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3 years ago