A glass is 4
7
full. Then 70cm3 of orange juice is poured in.
The glass is now
3
4
full. What is the total volume of the glass?

Step-by-step explanation:

4/7 x + 70 cm^3 = 3/4 x          Subtract 4/7 x from both sides

3/4 x - 4/7 x = 70 cm^3          The lowest common denominator is 28

5x = 70*28

5x = 1960                                Divide by 5

x = 1960/5

x = 392 cc

Step-by-step explanation:

The difference of 3/4 and 4/7 of the volume is 70 cm:

5/28 of the volume is 70 cm³

Divide both numbers by 5/28 to find the total volume of the glass:

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

goog may have it for you