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Figure ACBD is a rectangle. AD = 3 and DC 4. What is the length AC? |
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Answer» Given : ACBD is a rectangle. AD = 3 and DC 4. To Find : length AC Solution: ACBD is a rectangle. A rectangle has all 4 angles right angles => ΔADC is right angled at D Pythagoras' THEOREM: square on the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two perpendicular sides. => AC² = AD² + DC² => AC² = 3² + 4² => AC² = 9 + 16 => AC² = 25 => AC² = 5² => AC = 5 length AC = 5 Learn More 1. Find area of a rectangle which has the following dimensions.(a ... Rohit wants to design a rectangular PARK of perimeter and area Then ... |
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