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3 years ago

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What is the length of the base of a triangle with height 11 cm and area 137.5 cm2?

1 answer:

butalik [34]3 years ago

3 0

Hi. So for this question, u need to work backwards.

A=bh/2
137.5=Bx11/2
137.5=11b/2
137.5=5.5b
137.5/5.5=25

So the base would be 25 cm. To check, do the actual formula from the start.

A=bh/2
A=25x11/2
A=275/2
A=137.5! The answer is right! The base is 25 cm! Hope that helps! :)

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