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The correct answer is D
Three cubes with sides 3 cm, 4 cm, and 5 cm are melted to form a bigger cube. What is the surface area of the bigger cube?
A rectangular plot has an area of 490 m². If the length of the rectangular plot is 24.5 m. Find the perimeter of the rectangular plot.
The area of the floor of a cubical room is 49m². The length of the longest rod that can be kept in the room is