Calculate Trapezoid Area with Bases 9 and 12, Height 5 Units

Question

Given the trapezoid:

What is the area?

00:00 What is the area of the trapezoid?

00:06 Let's substitute the side lengths according to the given data

00:12 We'll use the formula for calculating trapezoid area

00:15 (height(AE) multiplied by the sum of bases(AB+DC)) divided by 2

00:25 Let's substitute the appropriate values and solve for the area

00:38 Always solve parentheses first

00:55 And this is the solution to the question

Formula for the area of a trapezoid:

$\frac{(base+base)}{2}\times altura$

We substitute the data into the formula and solve:

$\frac{9+12}{2}\times5=\frac{21}{2}\times5=\frac{105}{2}=52.5$

52.5