Question

1. Find the Area of the given circle. Round to the nearest tenth.

Answer 1

Hey there Panda!

Question #1

(3.5*3.14 = 10.99 rounded would be 11) 11 is your answer.

Question #2

The circumference equals 21.99, but rounding it would be 22.00

Question #3

We divide 12/2 and from this we get 6. We doing (6*3.14) and then multiply by 2 and then divide by it's circumference and then we get it area. The answer that I got was 452.39, but from looking at your options, your correct answer would be 452.2 (ft)

Question #4

So, by looking at this weird shape, we see that the integer's are 8 by 5. When doing area, we often multiply. As we do this with these number's, we get 40.

We do 8/4 = 2; 5/2 = 2.5. So, from doing this, we get 90.2 (ft).

Question #5

With this last question, I believe that the answer may be C.) So, what I did was I did the radius x's 3.14 and got 6.28 then minus 10 and got around 3.

Hope this helps.
~Jurgen

Answer 2

1. area = 3.14 x 3.5^2 = 38.46 = 38.5 cm^2

2. circumference = 2 x 3.14 x r = 21.98 = 22.0 cm

3. area = 3.14 x 6^2 = 113.04 = 113.0 ft^2

4. area = (8*5) + (.5x 3.14*4^2) = 90.24 = 90.2 cm^2

5. area = (4*4) - (3.14x 2^2) = 3.44 = 3.4 in^2