Gus plans to install a hand rail around a skating rink. the rink forms a 40m by,20 m rectangle.
how many meters of hand rail does gus need?

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?

What is the missing step in this proof ?

How do i put 3(x+7) in distributive property