(10*4)*2= what is the answer ?

 (10*4)*2  = 80

Step-by-step explanation: 10*4= 40

                                              40*2 = 80

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80

Step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.