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41 votes
41 votes
Find the length of side a

Find the length of side a-example-1
User Dietrich Epp
by
2.7k points

2 Answers

22 votes
22 votes

Answer:

a = 4

Explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

a² + 3² = 5²

a² + 9 = 25 ( subtract 9 from both sides )

a² = 16 ( take the square root of both sides )

a =
√(16) = 4

User Edze
by
2.2k points
16 votes
16 votes

Answer:

a = 4

Explanation:

a² = 5² - 3²

a² = 25 - 9 = 16

√16 = 4

a = 4

User Collin Chaffin
by
2.6k points
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