Answer:

Step-by-step explanation:
Given that,
Mass of material, m = 6900 grams
Volume of the material, V = 4.5 quarts
We need to find the density in pounds per cubic foot
We know that,
1 pound = 453.59 grams
⇒ 6900 grams = 15.21 pounds
Also, 1 cubic foot = 29.92 quarts
4.5 quart = 0.15 feet³
Density = mass/volume
Or

Hence, the density of the material is 
Step-by-step explanation:
ar of quadilateral
=16×7×7×20
=12080cmsq
Answer:
2916 ft³
Step-by-step explanation:
•the diameter of the sphere is 18 ft , to find the radius(r) you have to divide it by 2 ,
•which gives 9ft .
•And they also told you to take the value of pie as 3.
•So, substitute the values into the formula given for V and you will have your answer.
Hope I was able to help:))
Answer:
wait are you the person who is putting lyrics of a certain song? oh yeah it is! hello
Step-by-step explanation:
U right 9.88•10 in standard form like 98800000000.