Question
(74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 ×
2)² = ? What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.Solution
(74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 × 2)² = (0.75 × 640 + (3/4) × 360)² - ((1/3) × 81 × 2)² = (480 + 270)² - (54)² = 750² - 54² = (750 + 54)(750 - 54) = 804 × 696 = 559584
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