Lauren wants to buy 3 shirts at 15.00 each. at home, she calculates the total cost as 46.20 using the sales tax of 8% . at the store, the cashier tells lauren the total cost is 48.60 . who is wrong and what mistake did he or she make ?

Answer

Lauren is wrong. Maybe she added incorrectly??

Step-by-step explanation:

3 * 15 = 45

45 * 8% = 3.60

45.00 + 3.60 = 48.60

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2