SSAT Math Question 132: Answer and Explanation
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Question: 132
8. 
A unit block for construction is 1 × 2 × 3 inches. What is the number of whole blocks required to cover an area 1 foot long by 1
feet wide with one layer of blocks?
- A. 30 blocks
- B. 60 blocks
- C. 72 blocks
- D. 90 blocks
Correct Answer: A
Explanation:
The correct answer is (A). An area 1 foot long by 1
feet wide is 12" × 15" or 180 square inches in area. Each block is 6 square inches in area. Therefore, the number of blocks needed is 
= 30 blocks. The height of each block is irrelevant to the solution of the problem.