\begin{array}{l}
6 a+b=18 \\
4 a+b=14 t
\end{array}

Pls solve​

What is the square root of 45? (step by step working plz)

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?

Don't know how to find x given these segment lengths