Answer:
He should make the hypotenuse 5 in
Step-by-step explanation:
the pythagorean heoreom states that a^2+b^2=c^2. c is the hypotenuse. You already have a and b, 3 and 4. Plug it in
3^2+4^2=c^2
9+16=c^2
25=c^2
square root each side to isolate
c=5
A. 2x3=6 and 6x12=72 so 78 is greater than 36
6+72=79 which is less than 90
Roughly 14 times as 20% of 70 is 14.
