MATHEMATICS HIGH SCHOOL

A balloon has a circumference of 23 cm. Use the circumference to approximate the surface area of the balloon to the nearest square centimeter.

Answers

Answer 1

Answer:

The surface area of the balloon to the nearest square centimeter is 168cm^2.

To get the surface area of a sphere, we need to have the radius.

We are given the circumference.

The circumference formula is C=2πr.

We need to solve for r.

23 = 2πr

r=3.66

What is the surface area of the circle?

The surface area is A = 4πr^2.

Use the given values in the formula of the surface area.

A = 4π(3.66)^2

Solve for A.

A= 168 cm^2.

Therefore the surface area of the balloon to the nearest square centimeter is 168cm^2.

To learn more about the surface area visit:

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Answer 2

Answer: To get the surface area of a sphere, we need to have the radius. We are given the circumference. The circumference formula is C=2πr. We need to solve for r.
23 = 2πr
r=3.66

The calculation for surface area is A = 4πr^2.
A = 4π(3.66)^2

Solve for A.

A= 168 cm^2.

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Answers

Answer:

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

Welcome

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11 5
those are fractions btw
what is g?

Answers

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Answers

Answer:

Step-by-step explanation:

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Answers

Answer:

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Answers

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Simplify
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thanks!

Answers

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