Trapezoid with base lengths 3 inches and 7 inches and height 12 inches Find the area.
Formula : A=1/2(base 1 + base 2)h
A=81.6in?
You should be able to do this mentally
area = (1/2)( 3 + 7)(12)
= (1/2)(10)(12)
= (1/2)(120)
= 60
How did you ever get 81.6 ??
987
To find the area of a trapezoid, you can use the formula A = (1/2) × (base1 + base2) × height, where base1 and base2 are the lengths of the bases, and height is the perpendicular distance between the bases.
In this case, the base lengths are 3 inches and 7 inches, and the height is 12 inches.
Let's plug in the values and calculate the area:
A = (1/2) × (3 + 7) × 12
= (1/2) × 10 × 12
= (1/2) × 120
= 60 square inches
Therefore, the area of the trapezoid is 60 square inches, not 81.6 square inches.
To find the area of a trapezoid, you can use the formula A = 1/2 * (base1 + base2) * height.
In this case, the base lengths are given as 3 inches and 7 inches, and the height is given as 12 inches. Plugging these values into the formula, we get:
A = 1/2 * (3 + 7) * 12
Simplifying the expression inside the parentheses, we have:
A = 1/2 * 10 * 12
Multiplying 1/2 by 10 gives us 5, so the expression becomes:
A = 5 * 12
Finally, multiplying 5 by 12, we find that the area of the trapezoid is:
A = 60 square inches.
Therefore, the area of the trapezoid is 60 square inches, not 81.6 inches as you mentioned.