Question

A)A closed tin of milk has diameter 10cm and height 16cm. find the total surface area of the tin,pi=3.14

b)given that V=pi r²h,make r the subject of the fomula
c) using the result from b above ,find the value of r when v =81 cm³,pi=4 and h=9cm

Answer 1

`r = 1.5`

Explanation:

hope u understand