3 years ago

Can i please have some help?

1 answer:

3 0

Since you already have the perimeter, you can divide it to the total number of sides
156 cm / 12 sides
= 13 cm per sides

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Step-by-step explanation:

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$H^2=P^2+B^2\\(20)^2=(17)^2+B^2\\400=289+B^2\\400-289=B^2\\B^2=111\\Taking\ square\ root\ on\ both\ sides\\\sqrt{B^2}=\sqrt{111}\\B=10.53\\Rounding\ off\ to\ the\ nearest\ tenth\\B=10.5$

The bottom of the ladder is 10.5 feet away from the wall

Keywords: Triangle, Pythagoras Theorem

Learn more about Pythagoras theorem at:

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