Answer:
<h3><u>Part (b)</u></h3>
<u>Formula</u>: Area of a rectangle = width × length
<u>Substitution</u>: Area = 2.5 mi × 5 mi
<u>Answer</u>: Area = 12.5 mi²
<h3><u>Part (c)</u></h3>
<u>Formula</u>: Area of a triangle = 1/2 × base × height
<u>Substitution</u>: Area = 1/2 × (12 ft + 4 ft) × 5 ft
<u>Answer</u>: Area = 40 ft²
<h3><u>Part (e)</u></h3>
<u>Formula</u>: Area of a parallelogram = base × height
<u>Substitution</u>: Area = 24 cm × 6 cm
<u>Answer</u>: Area = 144 cm²
<h3><u>Part (f)</u></h3>
<u>Formula</u>: Area of a parallelogram = base × height
<u>Substitution</u>: Area = 7 m × 4 m
<u>Answer</u>: Area = 28 m²