Ask your own question, for FREE!
Mathematics 19 Online
OpenStudy (anonymous):

The figure below shows a shaded region and a nonshaded region. Angles in the figure that appear to be right angles are right angles. A picture of a rectangle is shown. The bottom of the rectangle is labeled 16 ft. The right side of the rectangle is labeled 8 ft. At the bottom left side of the rectangle there is a label that reads 2 ft. Inside the rectangle is a shaded region. The bottom of the region is labeled 8 ft and this side is perpendicular to the left side of the rectangle. The right side of the shaded region has a perpendicular line segment extending upward that is labeled 2 ft.

OpenStudy (anonymous):

help plz!

OpenStudy (aaronandyson):

Sorry , But the need to have a look at that picture to help you out.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

OpenStudy (anonymous):

does that help?

OpenStudy (anonymous):

@AaronAndyson

OpenStudy (aaronandyson):

The area of the entire rectangle is 8 times 16 that is 128 fft

OpenStudy (anonymous):

So the fist answer to the first question is 128 ft.

OpenStudy (radar):

Therefore the total area (shaded, plus unshaded) must equal 128 sq ft

OpenStudy (anonymous):

Ok the answer to the first question is 128 ft

OpenStudy (aaronandyson):

How did you get 32?? Show yo work.

OpenStudy (anonymous):

I multiplied 8×2×2×1 and got 32

OpenStudy (anonymous):

8 *2 *2 *1

OpenStudy (anonymous):

That is what i thought the first answer was.

OpenStudy (aaronandyson):

I think it shall be 8(2+2+1) 8(5) so now what is 8 times 5?

OpenStudy (anonymous):

40

OpenStudy (anonymous):

so is the answer 40

OpenStudy (aaronandyson):

It should be.

OpenStudy (anonymous):

ok thanks now can you help on the second question in the picture?

OpenStudy (anonymous):

@AaronAndyson

OpenStudy (aaronandyson):

Nonshaded region = entire rectangle - shaded region = 128 - 40

OpenStudy (anonymous):

88?

OpenStudy (anonymous):

so thats the answer

OpenStudy (aaronandyson):

I think.

OpenStudy (anonymous):

Ok thanks! :)

OpenStudy (aaronandyson):

No problem.

OpenStudy (radar):

The area of the shaded region can be solved by looking at the shaded region as being made up of: rectangle of 2 by 8 ft. plus a rectangle of 1 by 10 ft topped with a triangle with a height of 3 and a base of 10 ft. Sum those up for the shaded region.

OpenStudy (radar):

You will come up with an area of 41 sq ft. The unshaded would then be 128 - 41.

OpenStudy (radar):

40 and 88 may be close, but 41 and 87 is better.

OpenStudy (radar):

However, both answers do total up to the required total area.

OpenStudy (radar):

I will try summing up the unshaded area and double check. The unshaded consist of the sum the following: rectangle 2 x 16 = 32 sq ft rectangle 2 x 8 = 16 sq ft rectangle 4 x 6 = 24 sq ft Triangle height of 3 ft and base 10 ft = area of 15 sq ft. summing up = 87 sq ft

OpenStudy (radar):

Hey, it works both ways.

OpenStudy (anonymous):

Thanks! @radar

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!