The radius of a circle whose area is equal to the sum of the areas of two circles and radii 5 cm and 12 cm is
a) 13 cm
b) 14 cm
c) 15 cm
d) 17 cm
Answers
Answered by
0
Answer:
πR^2=π[5^2+12^2]
R=17
Answered by
6
Answer:
a) 13 cm
Step-by-step explanation:
πr2 = π5^2 + π 12^2
= π25 + π 144
= π 169
πr2 = π 169
r2 = 169
r = 13
Therefore answer is a = 13cm
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