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I just need help figuring out the area question which is on the bottom

I just need help figuring out the area question which is on the bottom-example-1
User Kartik Bhatt
by
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1 Answer

13 votes
13 votes

A

To find the area of the shaded region we have to:

Find the area of the outer trapezoid and then substract the area of the inner trapezoid.

B.

The area of a trapezoid is given as:


A=(1)/(2)(b_1+b_2)h

where b1 is the greater bae, b2 is the smaller base and h is the height.

The outer trapezoid has a greater base of 6 units, smaller base of 2 units and height of 6 units, then its area is:


A_O=(1)/(2)(6+2)6=24

The inner trapezoid has a greater base of 4 units, smaller base of 2 units and height of 3 units, then its area is:


A_I=(1)/(2)(4+2)3=9

Therefore the area of the shaded figure is 15 squared units.