Question

Tyrone built the ramp shown below.

To the nearest tenth of a meter, what is the length, 6x5 , of the ramp?

A
6.7 m

B
7.3 m

C
9.0 m

D
18.0 m

Answer 1

Option B . 7.3 m

Explanation:

we know that

The ramp is in the shape of a right triangle

so

To find out the length of the ramp, apply the Pythagoras Theorem

`c^(2)= a^2+b^2`

where

c is the length of the ramp (hypotenuse)

a and b are the legs of the right triangle

we have

`c=r\\a=7\ m\\b=2/ m`

substitute

`r^(2)= 7^2+2^2`

`r^(2)= 53`

take square root both sides

`r=√(53)\ m`

`r=7.28\ m`

Round to the nearest tenth of a meter

`r=7.3\ m`