Solved

Choose the Best Answer $49 \mathrm {~cm} ^ { 2 }$

Question 170

Multiple Choice

Choose the best answer.
-The area of a head of a screw is about

A) $49 \mathrm {~cm} ^ { 2 }$
B) $4.9 \mathrm {~m} ^ { 2 }$
C) $4.9 \mathrm {~mm} ^ { 2 }$
D) $49 \mathrm {~mm} ^ { 2 }$

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