Round 0.486 to the nearest hundredth

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Hi, can anyone show me how to do this problem? 100 points for this. in advance