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

Answer:

Option B . 7.3 m

Step-by-step 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

$r=\sqrt{53}\ m$

$r=7.28\ m$

Round to the nearest tenth of a meter

$r=7.3\ m$