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Question
If area of a triangular piece of cardboard is 90 cm2, then the length of altitude corresponding to 20 cm long base is ______ cm.
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Solution
If area of a triangular piece of cardboard is 90 cm2, then the length of altitude corresponding to 20 cm long base is 9 cm.
Explanation:
We know that,
Area of triangle = `1/2` × base × height
90 = `1/2` × 20 × height
Height = 9 cm
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