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a 6. What kind of hem is a folded edge on the metal made in order to increase its strength and to make a smooth finished edge?
a. single hem
b. double hem
c. wired edge
d. folding edges
7. Which of the following is NOT a sample of developed products?
a. cans of sardines
c. a box of cakes
b. a wooden table
d. stainless spoon and fork
8. Which is NOT a sample developed patterns?
a. cube
b. prism
c. cone
d. triangle