Find the area of the circle if it has a circumference of 40

127.39 square units

Step-by-step explanation:

We are given;

We are supposed to determine its area;

Circumference = πD or 2πr , where D is the diameter and r is the radius

Thus;

40 = 2πr

πr = 20

 r = 20/π

Area of a circle is given by;

A = πr²

but, r = 20/π

Hence;

Area = π × (20/π)²

        = π × 400/π²

         = 400/π

Taking π to be 3.14

   Area = 400 ÷ 3.14

            = 127.39 square units

Thus, the area of the circle is 127.39 square units

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

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ans789

step-by-step explanation: