If the triangle abc is similar to the triangle def, estimate the area of triangle abc if the area of the triangle def is 90

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The suare root of 9x plus 7 plus the square rot of 2x equall to 7