The radius of the circle below is (4x + 1) centimeters what is the area of the circle in terms of pie

Hello from MrBillDoesMAth!

 Pi * (4x + 1)^2.

Discussion:

The area of a circle with radius "r"  is given by the formula Pi * r^2. In our case, r = 4x+1, so by substitution:

Area = Pi * r^2 = Pi * (4x + 1)^2.

That's it. Now the formula can be expanded but it offers no greater insight.

Area = Pi * (4x +1)^2  =  Pi * (16x^2 + 8x + 1)

Regards, MrB.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,