Me solve and explain

if the triangle shown in the diagram is dilated by a scale factor of
1/2 what will be the perimeter of the resulting triangle?
a) 6 units
b) 9 units
c) 12 units
d) 18 units

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

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

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?