Question

PLEASE HELP I NEED HELP PLEASE!!!!!!!!

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

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

Answer 2

Answer:

Part 1

The unit of measurement which should be used to best represent the lengths of the sun and Earth's diameters is Km.

Step-by-step explanation:

The diameter of sun= 1.391×10⁶ Km

The diameter of earth= 1.2742×10¹⁰ mm = 1.2742×10⁴ Km

As 1 Km= 10⁶mm

The sun's diameter times greater than earth=

1.391×10⁶ Km÷ 1.2742×10⁴Km= 109 times

The diameter of Sun is about 109 times the diameter of the Earth.