Answer:
The surface area is 91
Step-by-step explanation:
3*4=12
12/2=6
6*2=12
7*5=30
4*7=28
3*7=21
12+30+28+21=91
The equations that are on the left are caculations triangle calcuations. The equations on the right are the ones that equal each of the 2d shapes in the prism and if u add them all up you get your surface area.
12 times 6= 72 divided by 3 = 24
she has 6 dozen so 12 times 6 because a dozen is 12 and then that number divided into 3 boxes which is 24
8/64
$5.71
40 divided by 7 equals 5.71428571, which should be rounded to 5.71.