Alice has three boxes to carry. One box has of mass of 1.453 kilograms. The second box has a mass of 3.8 kilograms. The third box has a mass of 11.39 kilograms. What is the total mass of the three boxes?

16.643 Kilograms

Step-by-step explanation:

Total means the sum of the number in this situation so first, you add

1.453 kg and 3.8 kg = 5.253 kg

then you add

5.253 kg and 11.39 kg = 16.643 kg

so the answer is 16.643 kilograms.

16.643

Step-by-step explanation:

just add it together

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