Crispin wants to calculate the density of an apple. To do this, he measures the apple's mass and its volume. He measures the mass as 202 grams and gets a volume measurement of 270 cm3.

What is the density of the apple, rounded to the correct number of significant figures?
A.
68 grams/cm3
B.
0.75 grams/cm3
C.
0.748 grams/cm3
D.
1.0 grams/cm3

Question

Crispin wants to calculate the density of an apple. To do this, he measures the apple's mass and its volume. He measures the mass as 202 grams and gets a volume measurement of 270 cm3.

What is the density of the apple, rounded to the correct number of significant figures?
 A. 
68 grams/cm3
 B. 
0.75 grams/cm3
 C. 
0.748 grams/cm3
 D. 
1.0 grams/cm3

TheSmartOne · Answer

Welcome to QuestionCove!

To answer your question, you need to know the formula for density. Since you've already gone offline within a few seconds after posting this, I'm going to assume you're never coming back so this is for the future Google searchers.

The formula for density is
Density = mass/volume

So simply plug in the values they gave you and you're done once you simplify it!

The next thing is significant figures. 202 and 270 are both 3 significant figures and so your answer will need 3 significant figures. I can explain all about significant figures more in detail if you want, but you can also Google it and read the rules.

Let me know if you have any questions. And once again, welcome to QuestionCove!

TheSmartOne · Answer

Hint: if you go just by significant figures, you don't even have to do any math