Answer:1,81 and 121.;)
Step-by-step explanation:
Find the area of the CD. (I used P for pi, too lazy @
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A=Pr² - Pr²
radius of the small hole in the middle, 0.75cm
radius of the CD, 6cm
A=3.14*6²-3.14*0.75²
A=111.27375cm²
The Approximate area of the CD is 111.27cm²
Add the two together and divide the answer by 137.16 add it together
28.7083333333...
But you could also round it up to 29.
Answer:
4. (d, the last one)
5. (a, the first one)
Step-by-step explanation:
