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Stels [109]
3 years ago
5

A set of stairs is being built as shown.

Mathematics
2 answers:
Oduvanchick [21]3 years ago
7 0

a squared + b squared = c squared

The answer is 7 inches

Sergio [31]3 years ago
5 0

Step-by-step explanation:

using Pythagoras a²+b²=c²

HOWEVER you know the hypotenuse

so it's rearranged to either c²-b²=a² or c²-a²=b²

so 13²-11²

so 169-121

this makes 48

square root 48 is 6.90 inches

this rounds up to <u>7</u><u> </u><u>Inches</u>

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