Calculate Trapezoid Area: Finding the Area of ABCD with Sides 10 and 11

Question

Given the following trapezoid:

Find the area of the trapezoid ABCD.

00:00 Calculate the area of the trapezoid

00:03 We'll use the formula for calculating trapezoid area

00:07 (Sum of bases(AB+DC) multiplied by height(H)) divided by 2

00:14 We'll substitute appropriate values and solve for the area

00:38 Factor 21 into 7 and 3

00:44 Factor 8 into 4 and 2

00:48 Simplify what we can

00:56 And this is the solution to the problem