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AlinaGGR14
@AlinaGGR14
July 2022
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Решите ,пожалуйста,№20
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zhenyaM2002
Verified answer
Формула Герона:
S= √(р(р-а)(р-b)(р-с))
р= (а+b+c)/2
a=8, b=9, с=5
р=(8+9+5)/2 = 11
√11* S= √11 * √ (11(11-8)(11-9)(11-5)) = √11 *√(11*3*2*6)= √11 * 6√11=
= 6*(√11)²=6*11= 66
Ответ: √11 *S= 66
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Answers & Comments
Verified answer
Формула Герона:S= √(р(р-а)(р-b)(р-с))
р= (а+b+c)/2
a=8, b=9, с=5
р=(8+9+5)/2 = 11
√11* S= √11 * √ (11(11-8)(11-9)(11-5)) = √11 *√(11*3*2*6)= √11 * 6√11=
= 6*(√11)²=6*11= 66
Ответ: √11 *S= 66