Answer:
24
Step-by-step explanation:
78-30=48
48/2=24
each one is 24kg
<span>C) 1/30 i think ok i am 12</span>
Answer:

Step-by-step explanation:
From the question we are told that:
Radius 
Height 
Rate 
Surface Radius 
Generally the equation for Volume is mathematically given by

Since radius to height ratio gives



Therefore


Generally the equation for Change of Volume is mathematically given by





Answer:
10 m
Step-by-step explanation:
opposite = sin30° × 20 =
× 20 = 10 m
<span>πd is the circumference of a circle, so with a diameter of 4 a single circle has a circumference of 4π. 1/3 of each circle is in contact with the belt, so that total part is still 4π. Then, the part of the belt connecting from tangent to tangent is 2 radii, so 3 areas is 12. The belt would then be 12+4π cm.</span>