1.1. find the length of the side indicated. And round to 1 decimal place

Answer:
Step-by-step explanation:
from the figure we understand that it is a right angled isosceles triangle, so we use the Pythagorean theorem
w = √(15²+15²)
w = √(225+225)
w = √450
w = 21.21
round to 1 decimal place
w = 21.2