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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Let the initial side be x ∴its volume is x³. it is increased by 50% ∴x+x/2 is the final side. its volume =(3x/2)³ =27x³/8

∴Final answer = (27x³/8)-x³ =(27-8)x³/8 =19x³/8=y/100 of x³ =19/8=y/100 1900/8 =y ∴y=237.5 we have to divide it by 100 because it is in % ∴final answer =237.5/100=2.375 ∴% increase in volume was 2.375%

Let the edge of cube be x Surface area = 6x² 50% increased edge = x+ (50/100)× 100 = x+ x/2 = (2x+x)/2 = 3x/2 New area = 6(3x/2)² = 6(9x²/4) = 27x²/2 Change in areas = 27x²/2 - 6x² = (27x² - 12x²)/2 = 15x²/2 5 change in areas = [(15x²/2)/6x²]× 100 = [15x²/12x²]× 100 = (15/12) × 100 = 125 % change in areas = 125%