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Mathematics 7 Online
OpenStudy (anonymous):

Can someone help me? I thought it was B=lw, but i don't know how to solve it??? PICTURE BELOW

OpenStudy (anonymous):

OpenStudy (anonymous):

By "v" do you mean VOLUME?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

\[Volume = \frac{ 1 }{ 3 } \times b^2 \times h\]

OpenStudy (anonymous):

\[24 = \frac{ 1 }{ 3 } \times b^2 \times 2\]

OpenStudy (anonymous):

i already have the answer for volume, i need the base. I thought the formula was B=lw, but I don't have the length or the width.

OpenStudy (anonymous):

Do: (1/3) * 2 \[24 = \frac{ 2 }{ 3 } \times b^2 \] Do: (2/3) * (3/2) (24) * (3/2) \[36 = 1 \times b^2 \] \[36 = b^2 \]

OpenStudy (anonymous):

Can you do that now?

OpenStudy (anonymous):

This would be so much easier if I had a calculator, I don't know how to multiply fractions by head??? but, 1x36 is 36, but that's not the answer??? The choices are: 2 cm 4 cm 6 cm 8 cm

OpenStudy (anonymous):

Do: (1/3) * 2 \[24 = \frac{ 2 }{ 3 } \times b^2 \] Do: (2/3) * (3/2) (24) * (3/2) \[36 = 1 \times b^2 \] \[36 = b^2 \] Now: \[\sqrt{36} = \sqrt{b^2}\]

OpenStudy (anonymous):

Can you do that now?

OpenStudy (anonymous):

it's 6, right?

OpenStudy (anonymous):

Do: (1/3) * 2 \[24 = \frac{ 2 }{ 3 } \times b^2 \] Do: (2/3) * (3/2) (24) * (3/2) \[36 = 1 \times b^2 \] \[36 = b^2 \] Now: \[\sqrt{36} = \sqrt{b^2}\] Then: \[6 = b\]

OpenStudy (anonymous):

thank you:)))

OpenStudy (anonymous):

So yes :)

OpenStudy (anonymous):

yw :)

OpenStudy (anonymous):

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