Pythagorean Theorem with Exact Answer

What is the final step in solving this work for c?
a² + b² = c²
3² + 4² = c²
9 + 16 = c²
25 = c²

• Divide both sides by 2

• Take the square root of both sides

Find missing side. Use the math buttons to type your EXACT ANSWER.

Mathematical Equivalence

ON

Find the missing side length.

Find the missing side length.

Which equation can be used to solve for "x"?

• 15² – x² = 21²

• x² – 15² = 21²

• 15² + 21² = x²

• 21² – 15² = x²

Find the length of the missing side. 

• 25 cm

• 42 cm

• 52 cm

• 48 cm

Find the length of the missing side. 

• 20 in.

• 68 in.

• 16 in.

• 80 in.

Find the length of the missing side. 

• 17 cm

• 22 cm

• 15 cm

• 13 cm

_{^{Find the missing side}}

• 36

• 76.8

• 12

• 40

_{^{Find the missing side}}

• 29.2

• 20

• 400

• 10