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zmey [24]
2 years ago
6

What is the radius of a circle whose area is equal to the sum of the areas of two circles whose radii are 20cm & 21cm?

Mathematics
2 answers:
Vika [28.1K]2 years ago
4 0

Answer:

29

Step-by-step explanation:

20^2 times 3.14= 1256

21^2 times 3.14= 1384.74

the sum of those two is 2640.74

the square root of that is 29

Xelga [282]2 years ago
3 0

Answer:

5cm

Step-by-step explanation:

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