This would be the same as the last question you posted!
Add the things in the bracket first so
2+2 = 4
then you do the 8 ÷ 2 = 4
then you multiply them together. this is because the number next to the bracket has a hidden multiply sign so
4 x 4 = 16
answer is 16
The brain requires 144 calories out of the full 1200.
The answer is B because
12^2+16^2=c^2
144+256=400
Square root of 400 is 20