Answer:
20.12 ft
Step-by-step explanation:
if you take 6^2 and subtract that from 21^2 then you will get your answer after finding the square root of the answer that the calculator gives you.
The perimeter would be 7+7+4+4 or 14+8 which equals 22 and the area would be 7x4 which is 28
I believe it's cones, cylinders, and spheres, hope this really help, and good luck
skskhfkakakan what is this haha
Answer:
42
Step-by-step explanation:
