Question

In the diagram what is the length of the 3rd side?

Answer 1

Answer:

Step-by-step explanation:

Use Pythagorean's Theorem:

$c^2=15^2+8^2$ and

$c^2=225+64$ and

$c^2=289$ so

c = 17

Answer 2

Answer:

Step-by-step explanation:

To find a missing side length, Use Pythagorean Theorem.

Pythagorean Theorem: a^2 + b^2 = c^2

Where a^2 is 8, b^2 is 15 and c^2 is the missing side length.

8^2 + 15^2 = c^2

Simplify the exponents

64 + 225 = c^2

c^2 = 289

Square root c^2

sqrt rt of 289 = 17

so the missing length of the third side is 17