Question

The metallic circular cylinder is 15cm high and the diameter of its base 14cm its is mealted to other circular cylinder with the radius 4cm find its hieght and curved surface area of new cylinder

Answer 1

Answer:

Step-by-step explanation:

Cylinder 1

h1=15cm

r1=7cm

Cylinder2

h2=?

r2=4cm

Volume of cylinder 1=vloume of cylinder 2

Pi r1^2 h1=pir2^2 h2

22/7×7×7×15=22/7×4×4×h2

7×7×15=4×4×h2

735=16 h2

735/16=h2

45.9cm=h2

CSA=2pi r2×h2

=2×22/7×4×735/16

=1155cm^2