30 POINTS Please help with these 6th grade math question

 = 45 cm^2

7 cm per ft^2

Step-by-step explanation:

The area of a trapezoid is found by

A = 1/2 (b1+b2)h

where b1 and b2 are the lengths of the bases and h is the height

A = 1/2(6+12)*5

A = 1/2 (18)5

   = 45 cm^2

The unit rate is 28 cm/ 4 ft^2

7 cm per ft^2

9) 45 cm²

10) 7 cm/ft²

Step-by-step explanation:

9) ½(sum of // sides) × height

½(6 + 12) × 5

½(18) × 5

9 × 5

45 cm²

10) 28cm/4ft²

7 cm/ft²

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