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December 8, 2016

Homework Help: surface area and volume

Posted by lilman on Sunday, April 29, 2012 at 11:15am.

I really need some help, I don't fully understand. Exspecially with fractions, don't know how to enter them on calculator.

1. What is the approximate volume of the sphere?

524 m³ (my choice)
1,000 m³
1,256 m³
1,570 m³

2. What is the approximate surface area of the sphere?

225 yd2
707 yd2
1,767 yd2 (my choice)
5,301 yd2

3. What is the approximate volume of the sphere if the surface area is 482.8 mm²?

998 mm³
1,126 mm³
2,042 mm ³
2,993 mm³
I don't understand this one.

4. What is the approximate surface area of the sphere?

342.3 km2
451.9 km2
903.4 km2
2,713 km2
Don't understand.

5. What is the approximate radius of a sphere whose volume is 1,349 cm³?

5.7 cm
6.9 cm
11 cm
14.7 cm
Don't understand.

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