Question

find the unknown side of a triangle

Answer 1

Step-by-step explanation:

This is right angled triangle,

By Pythagorean theorem,

hypotenuse²= base²+height²

AB²= 12²+5²

AB²=144+25

AB²=169

taking square root of both sides,

AB= √169

AB= 13

hope it's help you

Answer 2

Answer:

13cm

x square = 12 square + 5 square

or x square = 144+25

or x= root 169

or x=13

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