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February 28, 2015

February 28, 2015

Posted by **Yulia** on Monday, August 24, 2009 at 8:04pm.

is it =

33.51032163829112

What is the area in m2 of a triangle with base 2.8 m and height of 10.4 m?

is it =

14.56

A sphere has a volume of 106 cm3. What is its radius (in cm)?

is it =

101.8112097952136

that doesnt look right :/

- Physics -
**bobpursley**, Monday, August 24, 2009 at 8:12pmyes. Unless you have to worry about significant digits.

yes, but I wonder if you should be paying attention to sig digits.

No.

radius=cuberoot (3*volume/(4PI))

- Physics -
**drwls**, Monday, August 24, 2009 at 8:14pmThe first two are OK. For the third question, use

R^3 = [3/(4 pi)]*V

and then take the cube root

- Physics -
**bobpursley**, Monday, August 24, 2009 at 8:15pmTo get cube root on a calculator, use the y

^{x}key

as

NUMBER y^{x}(1/3) =

That give you the cube root of NUMBER

- Physics -
**Yulia**, Monday, August 24, 2009 at 8:19pmYes, I do have to be paying attention to sig figs, just for this chapter though

and for the third one, is it 6.297560287884612?

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