shabnambanutry shabnambanutry

05-04-2018
Mathematics

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help me with section c plssssss will give 9 points

help me with section c plssssss will give 9 points class=

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Аноним Аноним

05-04-2018

Question 1:
103 x 97 = (100 + 3)(100 - 3) = (100)² - (3)² = 10000 - 9 = 9991

Question 3:
Surface area = 4πr² = 4xπx42² = 22167cm²

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