Question

Find the area of each figure below

Answer 1

25.
`27a^(3)b^(2)`

26.
`3\pi x^(3)y`

Explanation:

For 25:

`A = (a+b)/(2) h` (area of a trapezoid)

`A=(11a^(2)b+7a^(2)b)/(2) *3ab` (substitute terms)

`= (18a^(2)b)/(2)*3ab` (collect like terms)

`= 9a^(2)b*3ab` (reduce the fraction by crossing out 2)

`= 27a^(3)b^(2)` (calculate)

For 26:

`A=\pi r^(2)` (equation of area of a circle)

`A=\pi (3x^(3) y)^(2)` (enter the radius)

`= 3\pi x^(3) y` (communtative property to reorder the terms)