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- #1

A balloon is made from material that has a density of 0.310 kg/m

Mass = Density x Volume

2756kg = 0.310kg/m^2 x Volume

2756kg / 0.310 kg/2 = Volume

Volume = 8890.322581 m^3

8890.322581 m^3 = 4/3(pi)r^3

3(sq)8890.322581 m^3 / (4/3(pi)) = r

r = 12.85117892 m

D = 25.70235784 m

Diameter to 3 significant digits = 25.7 m

Answer is wrong, what is the problem with my answer?

^{2}. If the balloon has a mass of 2756 kg and if it is assumed that the balloon is a perfect sphere, what is the diameter of the balloon? Keep the proper number of significant digits.Mass = Density x Volume

2756kg = 0.310kg/m^2 x Volume

2756kg / 0.310 kg/2 = Volume

Volume = 8890.322581 m^3

8890.322581 m^3 = 4/3(pi)r^3

3(sq)8890.322581 m^3 / (4/3(pi)) = r

r = 12.85117892 m

D = 25.70235784 m

Diameter to 3 significant digits = 25.7 m

Answer is wrong, what is the problem with my answer?

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