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1. How many square centimeters of construction paper Jesmin needs in order to exactly cover, with no overlap, 5 sides of a cube with edges that are 12 centimeters long?
- A. 60
- B. 60
- C. 60
- D. 60
Answer: Option D
Explanation:
Length of side =a=12cm
Area of one face of cube =a2=122 =144cm2
⇒ Area of 5 faces of cube = 5a2 = 5×144 = 720cm2
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