Cally wants to coat her driveway with a winter sealer. Her driveway is 18 feet long and shaped like a trapezoid. At the garage door, the drive way is 12 feet wide, then it widens to 20 feet at the street. How many square feet of sealer should Cally buy if she wants to apply two cost?
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I need a answer before Thursday 5 pm (eastern time)
To find the total square footage of Cally's driveway, we need to calculate the area of the trapezoid shape.
The formula to calculate the area of a trapezoid is:
Area = ((base1 + base2) / 2) × height
In this case, the two bases are the width of the driveway at the garage door (base1 = 12 feet) and the width of the driveway at the street (base2 = 20 feet). The height is the length of the driveway (height = 18 feet).
Let's calculate the area:
Area = ((12 + 20) / 2) × 18
= (32 / 2) × 18
= 16 × 18
= 288 square feet
Since Cally wants to apply two coats of sealer, we need to multiply the calculated area by 2:
Total square footage of sealer = 288 square feet × 2
= 576 square feet
Therefore, Cally should buy 576 square feet of sealer if she wants to apply two coats to her driveway.