What is the length of the unknown leg in the right triangle?

a = 3

Step-by-step 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 + 8² = ( )²

a² + 64 = 73 ( subtract 64 from both sides )

a² = 9 ( take the square root of both sides )

a = = 3

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

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