Answer:
The perimeter is 37.4 meters.
Step-by-step explanation:
Here's the plan:
use Pythagorean Theorem to calculate the unmarked side, then add up all three sides.
First, use Pythagorean Theorem.
7^2 + x^2 = 16^2
49 + x^2 = 256
subtract 49
x^2 = 207
square root both sides.
x = 14.3874945699
Add up all three sides, because the perimeter is the distance all the way around the outside of the shape.
Perimeter =
14.387494 + 7 + 16
= 37.387494
round to the nearest tenth (one d.p. means one decimal place)
Perimeter = 37.4
The perimeter is 37.4 meters.