Answer:
Step-by-step explanation:
Height of the cylinder h = 17 cm
Radius of the cylinder r = 5 cm

1+2=21, 2+3=36, 3+4=43, 4+5=52.
I think it's 37.5 . I'm pretty sure cause I think you divide 3/8 . Then you go 2 to the right for your answer with the decimal. Not sure but . I think I'm right.
If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84