[SPLIT, MOVED] Solve V=1/3Ah; V=45, h=5, etc

Could you help me with these problems?

How to solve:

V=1/3Ah; V=45, h=5

S= 4lw + 2wh; S=102, l=7, w=3


Solve formula for the specific variable
C= 2πr for r

T= mnr for n

brebre said:

How to solve:

V=1/3Ah; V=45, h=5

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Do you mean "Given V = (1/3)Ah, V = 45, and h = 5, I need to solve for the value of A"? If so, plug "45" in for "V", plug "5" in for "h", simplify, and divide both sides by 5/3. Simplify to get the final answer.

brebre said:

S= 4lw + 2wh; S=102, l=7, w=3

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Assuming this means "Find the value of h, given that S = 4Lw + 2wh, S = 201, L = 7, and w = 3", then plug the given values into the respective variables. Subtract 84 from both sides, divide through by 6, and simplify to get your final answer.

brebre said:

Solve formula for the specific variable
C= 2πr for r

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Assuming you are using the letter N to stand for the number pi, you have:

. . . . .C = 2(pi)r

...and you are supposed to get r by itself. Since you have 2(pi) multiplied on the r, divide this off.

brebre said:

T= mnr for n

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This one works just like the previous one: Divide off all the multiplied factors that aren't what you want. This will get n by itself.

If you get stuck, please reply showing all of your steps. Thank you.

Eliz.