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In ΔABC, AB = 20 cm, BC = 16 cm and AC = 12 cm and the radius of incircle is 4 cm. Find the area of ΔABC.

A88

B96

C84

D92

Answer:

B. 96

Read Explanation:

AB = 20 cm BC = 16 cm AC = 12 cm Radius of incircle = 4 cm Area of triangle = semi–perimeter of triangle × radius of incircle Area of triangle = [(20 + 16 + 12)/2] × 4 = 96


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സാമാന്തരികം ABCD ൽ AB,AD എന്നീ വശങ്ങളിലേക്കുള്ള ലംബങ്ങൾ യഥാക്രമം 5cm , 20cm ഉം ആണ്. സാമാന്തരികത്തിന്ടെ വിസ്തീർണ്ണം 160cm² ആയാൽ അതിന്ടെ ചുറ്റളവ് എത്ര ?