Apet toy manufacturer is designing a plastic ball for dogs that will float in water. in order for the ball to float it must have a density that is less than 1 gram per milliliter (the density of water). the approved design has a mass of 115 grams and a density of 0.600 g/ml. use the density formula d = m v to determine the radius of the ball to the nearest hundredth of a centimeter. volume of a sphere = 4 3 π r 3

3.576 cm

Step-by-step explanation:

radius of ball, r=?

Given:

Density, p = 0.600g/mL

mass, m= 115g

finding volume, v of ball by using formula p=m/v

v= m/p

= 115/0.600

=191.666 mL^3

=191.666 cm^3

Now using formula v= (4/3)πr^3 to find radius, r of the ball

r^3= 3v/4π

   = 3(191.666)/4π

   =45.75 cm

r   =3.5767 cm !

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

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step-by-step explanation: