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# Please explain how to do this (pythogerean theorem)

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I dont even know where to start... Thanks

Jun 25, 2017

### Best Answer

#1
+7352
+2

According to the Pythagorean theorem,

a2 + b2  =  c2     , where  " c "  is the hypotenuse of a right triangle, and  " a "  and  " b "  are its legs.

They tell us that   b = √77   and   c = 12  . Plug these values in for  b  and  c  .

a2 + √772  =  122              This is...

a2 + 77  =  144                  Subtract  77  from both sides of the equation.

a2  =  67                            Take the positive square root of both sides.

a  =  √67

a  ≈  8.19

Jun 25, 2017

### 2+0 Answers

#1
+7352
+2
Best Answer

According to the Pythagorean theorem,

a2 + b2  =  c2     , where  " c "  is the hypotenuse of a right triangle, and  " a "  and  " b "  are its legs.

They tell us that   b = √77   and   c = 12  . Plug these values in for  b  and  c  .

a2 + √772  =  122              This is...

a2 + 77  =  144                  Subtract  77  from both sides of the equation.

a2  =  67                            Take the positive square root of both sides.

a  =  √67

a  ≈  8.19

hectictar Jun 25, 2017
#2
+1

Thank you!

Guest Jun 25, 2017