Can someone help me on my math pls

22

Step-by-step explanation:

Plugging the numbers into the equation, we get 10^2+20^2=c^2

10^2 is 100, and 20^2 is 400

400 + 100 is 500

find the square root of that, which is exactly 22.36068 but the problem says to round to the nearest whole number, so the answer is 22.

22 ft

Step-by-step explanation:

a² + b² = c²

10²+20²= c²

c= (square root of) 100+ 400

c= 22.36