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The diameter of a ball is 8 in.

What is the volume of the ball?

Use 3.14 for pi.

Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

 

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A triangle has an area of 30 cm². The base and height are scaled by a factor of 3.

What is the area of the resulting triangle?

Guest Feb 22, 2018
edited by Guest  Feb 22, 2018
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Volume  =  (4/3) pi  (diameter/2)^3  =

 

(4/3) (3.14) ( 8/2)^3

(4/3)(3.14)(4)^3

(4/3)(3.14) *64 =  

 

267.95 in^3

 

 

The triangle's new area  =

 

Old Area * (Scale Factor)^2   =

 

30  * (3)^2  =

 

30 * 9  =

 

270 cm^2

 

 

cool cool cool

CPhill  Feb 22, 2018

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