Question

Find the length of the unknown side. Round your answer to the nearest whole number.

7 inches
10 inches
25 inches
50 inches

Answer 1

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Answer 2

you can work this out 2 ways:

since the 2 sides are equal you cqan see that the othe rside is the diagonal of a square:



The diagaonal of a square can be calculated by the multiplying the side by sqrt(2)

The other way is a more general form of this and uses the pythage=oras equation

a^2 + b^2 = c^2

in this case a & b = 5

so work out c from that equation