Step-by-step explanation:
Arithmetic mean formula is
A=(x1+x2+x3+....+xn)/n
in this case
A=(8+10+10+10+6+7+8)/7=
=59/7=
=8.42857143~=8.4
1/4;2/5;83/100;3/2;7/10;4/5
Answer: 196πcm²
Given
Diameter = 14
Radius = d/2
= 14/2
= 7
Surface area = 4πr²
Take π = 22/7
= 4×22/7×7×7
= 616 cm²
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