Arc CD is Two-thirds of the circumference of a circle. What is the radian measure of the central angle?

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation: