Answer:
4a² +3a
Step-by-step explanation:
4a x a =4a²
3 x a= 3a
Answer:
Area of sphere is given by
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· ![r^2](https://tex.z-dn.net/?f=r%5E2)
Step-by-step explanation:
The surface area of sphere is given by:
·
· ![r^2](https://tex.z-dn.net/?f=r%5E2)
Option C and D are correct but is missing in the options
Option A and B are incorrect.
to solve the area of sphere when radius is given a constant value.
Answer A : 2.4.
Take 4 x 3 =12 then 12:5 = 2.4