What is the perimeter and area of 18 12 13

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Simplify this expression. 8x 16(x + y)

Find each value of the five-number summary for this set of data. [note: type your answers as numbers. do not round.] 46, 19, 38, 27, 12, 38, 51 minimum maximum median upper quartile lower quartile