Question

PLEASE PLEASE I REALLY NEED HELP

The average human body cell is about 5.1 x 10 to the power of -4 cm in diameter. The diameter of a plant cell is 8 x 10 to the power of -3 cm.
What is the combined diameter of the body cell and plant cell?

Answer 1

`8.51*10^(-3)`

Explanation:

Diameter of body cell :
`5.1*10^(-4)`

Diameter of plant cell :
`8*10^(-3)`

So, combined diameter of body cell and plant cell :

`5.1*10^(-4)+8*10^(-3)`

`10^(-3)(5.1*10^(-1)+8)`

`10^(-3)(0.51+8)`

`10^(-3)(8.51)`

`8.51*10^(-3)`

Thus the combined diameter of of body cell and plant cell is
`8.51*10^(-3)`