How do you solve this problem. Please provide step by step details. Thanks!

Solve for B

V=1/3 Bh

V=20, h=4

(Note: I could not do fractions so 1/3 is a fraction)

Solve for h

A=1/2(B+b)h

A=49.5, B=17, b=16

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- Feb 5th 2011, 10:02 AMnasirnoor1Solving for unknown varilable
How do you solve this problem. Please provide step by step details. Thanks!

Solve for B

V=1/3 Bh

V=20, h=4

(Note: I could not do fractions so 1/3 is a fraction)

Solve for h

A=1/2(B+b)h

A=49.5, B=17, b=16 - Feb 5th 2011, 10:04 AMe^(i*pi)
For the first one if you divide both sides by $\displaystyle \dfrac{h}{3}$ you will make B the subject: $\displaystyle B = \dfrac{3V}{h}$

- Feb 5th 2011, 11:08 AMskoker
here is how i did the second equation.

$\displaystyle 49.5={\frac {1}{2}}(17+16)h$

$\displaystyle (2)49.5=(17+16)h$ multiply through by $\displaystyle {\frac {2}{1}}$ to clear fraction.

$\displaystyle 99=(33)h$ multiply left side and sum numbers in brackets on right.

$\displaystyle {\frac {99}{33}}={\frac {33}{33}}h$ divide both sides by 33.

$\displaystyle 3=h$

hope that helps.