Plz this is due tomorrow

over the course of a year a tractor-trailer commutes 160,000 miles across america assuming the trucker or changes his tires every forty thousand miles and that he starts with a brand new set of tires how many sets of tires will he use in a year.

plz thus is due tomorrow

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'.

i’m here for points.