Asked by Cats24
It say to find the area of the irregular shape and it's a semi circle with the diameter of 5 and a square measure 8 and I got the area of the rectantagle which is 40 and now I got to find the area of the semi circle but it say the radius for the formula and I can't find get the rest but I need to explain my answer. A. 90.2cm squared B.241cm squared C.65.1cm squared D 72.3cm squared PLZ HELP!
Answers
Answered by
Cats24
I ment I found the area of the rectangle I just need the semi circle and then add it up to find the amswe
Answered by
Steve
A square of measure 8 does not have an area of 40.
A 5x8 rectangle has an area of 40.
You have a formula for the area of a circle, using its radius. Since the diameter is twice the radius,
πr^2 = π(d/2)^2 = πd^2/4
A circle of diameter d has area πd^2/4
you have a semicircle, so its area is πd^2/8 = 25π/8 = 9.82
40+25π/8 = 49.82
Hmmm. There must be something missing, since none of the answers comes even close.
Hmm -- maybe you do have a square of side 8.
64+25π/8 = 73.82
That looks close to D with a typo.
A 5x8 rectangle has an area of 40.
You have a formula for the area of a circle, using its radius. Since the diameter is twice the radius,
πr^2 = π(d/2)^2 = πd^2/4
A circle of diameter d has area πd^2/4
you have a semicircle, so its area is πd^2/8 = 25π/8 = 9.82
40+25π/8 = 49.82
Hmmm. There must be something missing, since none of the answers comes even close.
Hmm -- maybe you do have a square of side 8.
64+25π/8 = 73.82
That looks close to D with a typo.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.