Question

PLEASE HELP I NEED HELP PLEASE!!!!!!!!
Use the given information to complete parts I and II. In your final answer, include all calculations.

Venus has an approximate diameter of 1.2103 · 10^10 millimeters. The sun has a diameter of 1.391 · 10^6 kilometers.

Part I: Given that for every one kilometer there are 1,000,000 millimeters, which unit of measurement should be used to best represent the lengths of the sun and Venus's diameters?

Part II: Approximate how many times greater the sun's diameter is than planet Venus's.

Answer 1

#1

• 1km=10^6mm

Km should be used as unit .

#2

• Venus=1.2103×10^10mm=1.21×10^4km
• Sun=1.391×10^6km

$\\ \tt\hookrightarrow \dfrac{Sun}{Venus}=\dfrac{1.21\times 10^4}{1.391\times 10^6}=0.869\times 10^{-2}=8.69\times 10^{-3}times$