Question

Find y.
A. 8.5
B. 8
у
C. 7.5
D. 6.5
6
2.5

Answer 1

D

Explanation:

Using Pythagoras' identity in the right triangle

y² = 6² + 2.5² = 36 + 6.25 = 42.25 ( take the square root of both sides )

y =
`√(42.25)` = 6.5 → D

Answer 2

c = 6.5

Explanation:

6^2 + 2.5^2 = c^2

36 + 6.25 = c^2

42.25 = c^2

6.5 = c