An iron cast is made in a mold with a hot length of 16.40 in. after cooling, the cast is 16.25 in. long. what is the shrinkage percent?

Hi! (: I believe that the answer would be 15%, if you subtract 16.25 from 16.40, which would make 0.15 Then make that a percentage by moving the decimal to the right two spaces. 15%

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²