Answer:
<h2>L.A. = 384 cm²</h2><h2>S.A. = 640 cm²</h2>
Step-by-step explanation:
Lateral Area:
We have four congruent triangles with base b = 16cm and height h = 12cm.
The formula of an area of a traingle:

Substitute:


Surface Area:

In the base we have the square with side s = 16cm. The formula of an area of a square:

Substitute:


A. $6800 + $1360= $8160 total cost
b.
$68.85 each * 165 bracelets = $11360.25
$11360.25- $8160 total cost = $11278.75 profit
$11278.75 profit/$8160 total cost= 1.38218
1.38218= about 138%
Final answer: 138%
Warning: This answer will vary if you find the percent over cost (not including duty).
Answer:
Your answer would be bar graph