if the edge of cube is increased by 2.5 times how much surface area will be changed
please answer
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Answer: 31.5x²
Step-by-step explanation:
Let original edge of cube be x.
Original surface area = 6x²
New edge = 2.5x
So, new surface area = 6 × (2.5x)²
= 6 × 6.25x²
= 37.5x²
Change in surface area = 37.5x² - 6x² = 31.5x²
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