ABC is a right angled triangle, right angled at B. AB =9 cm, AC=15 cm, and D&E are mid points. Calculate the length of BC & area of triangle ADE
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To Find: The length of BC and the area of ΔADE
Given:
ΔABC is right angled at B, AB = 9, AC = 15, and D, E are midpoints of sides AB and AC.
Concept Used:
Pythagoras Theorem: According to the Pythagoras theorem, Square of the hypotenuse of a right-angled triangle equal to the sum of squares of base and perpendicular.
Explanation:
AB = 9cm
AC = 15cm
D, E are midpoints of side AB and AC,
(i) by using Pythagoras theorem,
BC = √144
BC = 12cm
(ii) Area of ΔADE
Area
Area
Area
Area = 13.5 cm2
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Answer:
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