The surface area of a cone is 25.6π in2 and the slant height is 2.4 in. what is the radius of the cone
a.54π cm2
b.72π cm2
c.45π cm2
d.108π cm2

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

What is the square root of 45? (step by step working plz)

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)