I need help asap :):):).

A) 2(18) + 2(w) = 56

Step-by-step explanation:

If there are 4 sides. 2 sides are 18 and 2 sides are the width.

To estimate the number of years for a variable to double, take the number 70 and divide it by the growth rate of the variable. This rule is commonly used with an annual compound interest rate to quickly determine how long it takes to double your money.

So 70÷4.5 = 15.5555556. So the answer is  B