Write the sum of the numbers as the product of their gcf and another sum 40+25

Which one is the correct answer, and why?

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount