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inessss [21]
3 years ago
5

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]3 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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