Question

Find the missing side b.
A. 16.1
B. 19.7
C. 26
D. 13

Answer 1

16.1. Solve by using the Pythagorean Theorm. b squared+8 squared= 18 squared. b squared+64=324. Subtract 64 from both sides to get b squared=260. Square root 260 to get 16.1

Answer 2

Answer: A . 16.1

Explanation:

In the figure we have a right triangle in which one of the leg's length is missing.

• Pythagoras theorem of right triangles says that the square of hypotenuse is the sum of the squares of the two legs.

For the given triangle , we have
`(18)^2=b^2+8^2`

i.e.
`\Rightarrow\ 324=b^2+64`

i.e.
`\Rightarrow\ b^2=324-64`

i.e.
`\Rightarrow\ b^2=260`

i.e.
`\Rightarrow\ b=√(260)=16.1245154966approx16.1`

Hence, the missing side = 16.1 units