Question

What's the area of a trapezium with a height of 6cm and a length of 9cm and 15cm?

Answer 1

72cm²

Explanation:

Hello!

The formula for area of a trapezoid:
`A = \frac12(b_1 + b_2)h`

We find the average of the bases, and multiply it by the height.

Plug in the values and solve

• 
  `A = \frac12(b_1 + b_2)h`
• 
  `A = \frac12(9 + 15)6`
• 
  `A = \frac1224(6)`
• 
  `A = 12(6)`
• 
  `A = 72`

The area of the trapezoid is 72cm²