Acircle with radius 12 mm divided into 20 sectors of equal area. which is the area of one sector to the nearest tenth?

 The area of one sector is 22.6 sq. mm.

Step-by-step explanation:  Given that a circle with radius 12 mm divided into 20 sectors of equal area.

We are to find the area of one sector to the nearest tenth.

The AREA of a circle with radius 'r' units is given by

Here, the radius of the circle is

r = 12 mm.

Therefore, the area of the circle will be

Since the whole circle is divided into 20 equal sectors.

So, the area of one sector is

Thus, the area of one sector is 22.6 sq. mm.

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

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