Question

S = 2*pi*d*sqrt(d^2+h^2)
rearrange to make h the subject

Answer 1

Square everything first...

Answer 2

would I not divide everything by 2*pi*d first?

Answer 3

Ok, do that first...

Answer 4

S/(2*pi*d)=sqrt(d^2+h^2)

Answer 5

Square everything...

Answer 6

(S/(2*pi*d))^2=d^2+h^2

Answer 7

Subtract d^2 and then square root...

Answer 8

(S/(2*pi*d))^2-d^2=h^2

h=sqrt((S/(2*pi*d))^2-d^2)

Answer 9

Good enough?

Answer 10

So is this my answer:

Answer 11

Thank you very much! :)

Answer 12

yw:-)