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Please answer fast.. find the atea of shaded region |
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Answer» Answer: A ( ∆ ABC ) = 1/2 × BASE × height = 1/2 × 48 × 20 [ draw a perpendicular to BC . by Pythagoras theorem we get (52)² - (48)²= (20)² . so height of triangle is 20 CM ] A ( ∆ ABC ) = 48 × 10 A (∆ ABC ) = 480 cm² now by Pythagoras theorem, AD²+ DB² = AB² 12² + 16² = AB² 144+256 = AB² 400 = AB² AB = 20 cm also A( ∆ ADB ) = 1/2 × base × height = 1/2 × 16 × 12 = 16 × 6 = 96 cm² area of shaded portion = A( ∆ ABC ) - A(∆ ADB ) = 480 - 96 = 384 cm² fol low. karo yaar drop likes |
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