We will be showing you how to solve a Pythagorean Theorem problem step by step.

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How to Solve a Diagonal Line

of a Rectangular Picture Frame

(Step by Step)

How long are the

diagonals of a 9" x 12" rectangular

picture frame?

STEPS:

1. a2 + b2 = c2

2. Plug in the length x width

3. Square it.

5. Square Root it. To get final answer.

Problem 1 :

Rectangular Picture Frame 9" x 12"

Diagonal through rectangle - triangle

Find missing length

a2 + b=  c 2

122 + 92 = C2

(12 x 12) + (9 x 9) = C2

144 +81 + C2

√225 = C2

15 = C

Problem 2 :

How long are the diagonals of a 10" x 13'' rectangular picture frame?

102+ 132= C

(10 x 10) + (13 x 13) = C2

100 + 169 = C

√269 = C

C = 16.4

Problem 3:

How long are the diagonals of a 15" x 18" rectangular picture frame?

152 + 182 = C2

(15 x 15) + (18 x 18) = C2

225 + 324 = C2

√549 = C2

C = 23.43

Now you are ready for other harder problems. If you need help, just look back on the steps.

NOW WE HAVE TAUGHT YOU HOW TO SOLVE A PROBLEM.

CONGRATULATIONS, WE ARE SO SMART!