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math --- check my work!

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1.Find the surface area for a sphere with a radius of 10 feet. Round to nearest whole number.
1,256 ft2***
4,189 ft2
1,089 ft2
1,568 ft2

2.Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number.
1,257 ft3
4,187 ft3***
1,089 ft3
1,568 ft3

3.Find the surface area for a sphere with a radius of 7 cm. Round to the nearest whole number.
307 cm2
1,436 cm2
1,020 cm2
615 cm2***

4.Find the volume for a sphere with a radius of 7 cm. Round to the nearest whole number.
307 cm2
1,436 cm2***
1,020 cm2
615 cm2

5.Find the radius of a sphere with a surface area of 804 cm2. (1 point)
9 cm5. Find the radius of a sphere with a surface area of 804 cm2. (1 point)
9 cm
8 cm
64 cm
204 cm

dont know the last one, sry
pls help asap!!!
thanx in advance

  • math --- check my work! - ,

    5. sqrt[804/(4 pi)] = 8

    check

    4 pi (64)= 804.24

  • math --- check my work! - ,

    its b. 8
    thanx damon!:)

  • math --- check my work! - ,

    You are welcome.

  • math --- check my work! - ,

    Is 804.24 rounded to the tenth place

  • math --- check my work! - ,

    Hey, thanks so much guys. They are all right. The correct answers are:
    1. A
    2. B
    3. D
    4. A
    5. B
    5/5=100% correct

  • math --- check my work! - ,

    No, Its
    1. A
    2. B
    3. D
    4. B
    5. B

  • math --- check my work! - ,

    santana is 100% correct

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