Determine the length, to 1 decimal place, of the arc that subtends an angle of 1.5 radians at the center of a circle with radius 10cm.

No he does not because he can only cover 12 square feet from 15 square feet which he will still need 3 more. this is because if 3×5=15 square feet and 15-12=3 which thats the answer

Where’s the problems ? ?

Yes. there is a constant ratio of number of calories to gram of protein.12/3=24/4=32/8=44/11=4