Solve the problem.
-What are the dimensions of the smallest square that you can make using 21 -in. by 28 -in. rectangular tiles?
A) 84 -in. $\times 84$-in.
B) 70 -in. $\times 70$-in.
C) 42 -in. $\times 42$-in.
D) 168 -in. $\times 168$-in.

Question

Quizplus · Accepted Answer

The smallest square that can be made using 21-inch by 28-inch rectangular tiles requires finding the least common multiple (LCM) of the tile dimensions. The LCM of 21 and 28 is 84, so the dimensions of the smallest square are 84 inches by 84 inches.

Solve the Problem ×84\times 84×84 -In B) 70 -In ×70\times 70×70 -In C) 42 -In

Solve the Problem $\times 84$ -In
B) 70 -In $\times 70$ -In
C) 42 -In