Question

a cylinder has a furface area os 42 cm over 2 if it were dilated using a scale facto of 1/2 what is the surface area of the new cyinder?

Answer 1

When a solid is dilated by scale factor k, areas scale by k^2. Here k = 1/2, so area factor = (1/2)^2 = 1/4.

New surface area = 42 × 1/4 = 10.5 cm².