pythagorean 9.4 1

Question

Use the Pythagorean theorem to find the missing side.
 
c=9
a=7
find b

Answer 1

Here is a hint:

 

a² + b² = c²

 

 

The other similar questions can be answered the same way.

Answer 2

C is the longest side ... the hypotenuse

 

   c² = a² + b²

   9² = 7² + b²

   81 = 49 + b²

   81 - 49 = b²

   b² = 32

  √(b²) = √(32)

  b = √(16)√(2)

  b = 4√2

 

Answer 3

No problem--you have a formula involving a, b and c(c is hypotenuse).

Two of the three sides lengths are given; put them into the equation, then solve for the remaining side (non-given letter).

The square root operation will have to be used.