Answer:
False! all cross sections of spheres are circles!
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
d = 20
r = 0.5d
r = 10cm
A = πr^2 = 100π cm^2
New class average: 83
The original average: 82
And if there are 12 students, the total sum of all 12 tests should be
82 x 12 = 984
Then to find the average of the new tests
Add 12 points to the original sum
984+12 = 996
Then divide by 12 to find the new average
996/12 = 83