Answer:
I'm going to use the Pythagoras theorem
1. hypotenus²= base²+height²
h²=80²+18²
h²=6400+324
√h²=√6724
hypotenuse= 82
2. 53²=45²+h²
2809=2025+h²
2809-2025=h²
784=h²
√784=√h²
h=28
3. 40²=b²+24²
1600=b²+576
1600-576=b²
√1024=√b²
b= 32
Your answer is D.
Because there are no negative reciprocals, therefore there are no right angles.
I think it is B, but I'm not fully sure.
The uniforms will cost 1,360, so yes they have enough money to buy 11 uniforms.
Hope this helps.
