Help me plz. i need help with this

72.5

Step-by-step explanation:

First, find the area of the trapezoid if you split the figure in half

((5 + (2 + 5 + 5))/2)*5

((5 + 12)/2)*5

(17/2)*5

42.5

Find the other half

6 * 5 = 30

Add the two parts

30 + 42.5 = 72.5

7.5 inches

Step-by-step explanation:

The difference in the two poster boards will be the measurement found by subtracting them.

Subtract 42.25 and 34.75.

42.25 - 34.75 = 7.5

To subtract decimals, line up by decimal place and move from right to left.