Answer:
0.3056 or 30.56%
Step-by-step explanation:
The volume of the grapefruit with the peel is:
![V_p=\frac{4 \pi (d/2)^2}{3}\\V_p=\frac{4 \pi (12/2)^2}{3}\\V_p=48 \pi](https://tex.z-dn.net/?f=V_p%3D%5Cfrac%7B4%20%5Cpi%20%28d%2F2%29%5E2%7D%7B3%7D%5C%5CV_p%3D%5Cfrac%7B4%20%5Cpi%20%2812%2F2%29%5E2%7D%7B3%7D%5C%5CV_p%3D48%20%5Cpi)
When removing the peel, the grapefruit diameter becomes 10 cm (take out 1 cm of peel from each side). The volume of the grapefruit without the peel is:
![V_n=\frac{4 \pi (d/2)^2}{3}\\V_n=\frac{4 \pi (10/2)^2}{3}\\V_n=33.333 \pi](https://tex.z-dn.net/?f=V_n%3D%5Cfrac%7B4%20%5Cpi%20%28d%2F2%29%5E2%7D%7B3%7D%5C%5CV_n%3D%5Cfrac%7B4%20%5Cpi%20%2810%2F2%29%5E2%7D%7B3%7D%5C%5CV_n%3D33.333%20%5Cpi)
The percentage of the volume correspondent to the peel is given by the difference between both volumes, divided by the total volume:
30.56% of volume of the grapefruit is the peel.
Answer are: 90, 232, 18 and 98
Answer:
Straight
Step-by-step explanation:
supplementary means sum of two angles
with 180
Answer:
300 girls
Step-by-step explanation:
100% represents the whole school
To calculate this amount divide 99 by 33% to find 1% and multiply by 100
school population =
× 100 = 3 × 100 = 300