Please!!!!!1?

Question

28.5

:::Practice Problems:::

Please answer the following multiple choice questions about the area of polygons and circles. When you are satisfied with your answers, click the 'turn in your test' button to submit your work.


1: Find the area of a triangle with base length 40, height 25, and leg 1 length 30.
32.5
400
500
600


2: Find the area of a rectangle with a diagonal of 13 and longer side of length 12.
30
60
144
156


3: Find the area of a trapezoid with base length 28, height 10, top side 8, and side lengths 12 and 15.
63
180
360
1120


4: A hole is being cut out of a square piece of carpeting with side length 18 feet, for a column 6 feet in diameter. How many square feet of carpeting are there after the piece for the column has been cut out? Round your answer to the nearest tenth.
108.0 sq.ft.
211.0 sq.ft.
295.7 sq.ft.
324.6 sq.ft.


5: A yield sign is an equilateral triangle with 36 inch sides. How many square inches of material are needed to make the sign? Round your answer to the nearest tenth of a square inch.
108.0 sq.in.
324.6 sq.in.
561.2 sq.in.
648.0 sq.in.


6: The area of a trapezoid is 28 square feet. The bases are 5 feet and 9 feet. What is the height of the trapezoid?
4 ft.
5 ft.
6 ft.
9 ft.


7: The school band is selling pennants. Each pennant is cut in the shape of an isosceles triangle with base of 1 foot and height of 4 feet. How many square feet of fabric are needed to make 200 pennants (assuming no waste)?
100
200
400
800


8: Find the area of parallelogram ABCD where AB || CD, AB = 21, AD = 32, and height = 24.
504
672
768
822


9: Tom plans to make strawberry shortcake to take to a party. The recipe calls for a 10 inch diameter round pan. Tom only has an 8 inch square pan, a 9 inch square pan and a 10 inch square pan. Which pan comes closest in area to the one that the recipe suggests?
8 inch
9 inch
10 inch
12 inch


10: A 20 ft. by 15 ft. swimming pool is surrounded by a 2 ft. wide sidewalk. A fence on the edge of the sidewalk encloses the whole pool area. What is the area in square feet inside the fence?
300 sq.ft.
374 sq.ft.
456 sq.ft.
522 sq.ft.


11: What is the area in square feet of only the sidewalk in number 10?
156 sq .ft.
300 sq .ft.
374 sq .ft.
274 sq .ft.

PLEASE GUYS!!
I NEED HELP, I HAVE 4 DAYS LEFT OF SCHOOL AND A BUTT LOAD OF WORK TO DO. YES I KNOW I SHOULD OF PAID ATTENTION AND DID MY WORK ON...I SCREWED UP.
BUT PLEASE I NEED HELP!

Answer 1

1. A= .5BH = .5*40*25 = 500

2. A^2 + B^2 = C^2 diagonal of 13, side of 12, means the other side is 5.
A = LW = 5*12 = 60

3. A = H*(ave L) = 10*(8+28)/2 = 180

4. A= 18^2 - PI8r^2 = 324 - 9PI =295.7

5. A = .5BH; Base^2 = 36^2 - 18^2 = 972
A = .5(36)(31.18) = 561.2

6. A= H*(ave L)
28 = H(5+9)/2
28 = 7H
4 = H

7. A = .5BH
A = .5*1*4 = 2
200*A = 400

8. A = BH
A = 21*24 = 504

9. A=PI*r^2 = 25PI = 78.5
9" pan at 9*9=81 is closest.

10. A = pool + 2' on each side
A = (L+4)(W+4) = 24*19 = 456

11. A of sidewalk = total area - area of pool
A = 456 - 20*15 = 456-300 = 156

Answer 2

I am turning 14 in a few weeks, and i started when i was 13. But all girls start whenever. You're never too late or too early. Unless your like 4. Then that would be weird. Haha, and when you do start, i strongly suggest Always Pads. You shouldn't use tampons until you feel like you should. Hope this helps! (:

Answer 3

Draw pictures and take your time. #10 is 456 sq. feet.... or is it?

Answer 4

Steve A. had every answer right. Great job Steve! :)

Answer 5

sorry, you snoozed, we didnt