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### Grade 7 - Mathematics9.51 Surface Area of Cube - I

 Example: The edge of a cube is 4.5 metres. Find its lateral surface area. Solution: Given that, l = 4.5 metres. The lateral surface area = 4l2. = 4 * (4.5)2. = 4 * 20.25 = 81 Square metres. Directions: Solve the following problems. Also write at least ten examples of your own.
 Q 1: The edge of a cube is 4 metres. Find its lateral surface area.44 Square metres64 Square metres54 Square metres34 Square metres Q 2: The edge of a cube is 12 metres. Find its lateral surface area.576 Square metres476 Square metres376 Square metres676 Square metres Q 3: The edge of a cube is 18 metres. Find its lateral surface area.1496 Square metres1296 Square metres1356 Square metres1965 Square metres Q 4: The edge of a cube is 8 metres. Find its lateral surface area.156 Square metres256 Square metres265 Square metres356 Square metres Q 5: The edge of a cube is 15 metres. Find its lateral surface area.1020 Square metres2025 Square metres856 Square metres905 Square metres Q 6: The edge of a cube is 5.6 metres. Find its lateral surface area.125.44 Square metres115.25 Square metres115.44 Square metres124.55 Square metres Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!