the sides of a triangle are 25 CM, 39 cm and 56 cm .find the altitude to the longest side.
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Answer:
Area:
Step-by-step explanation:
Area= √(p) (p-a) (p-b) (p-c) , p = ( 25+39+56 ) ÷2= 60 , Area = √(60 ) (60 - 25) (60 - 39) ( 60 - 56) Area= √ 176400 , Area= 420 cm2 , Step2: Find altitude , A= 1/2 × base × height , 420= 1/2 × 56 × height , 420 = 28 × height. height = 420 ÷ 28 , h= 15 cm . The altitude is 15 cm.
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