How might a change in one of these processes affect Earth's spheres?

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle