find the area of triangle of side 5 centimetre 6 and 7 cm.
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a=5,b=6,c=7 a+b+c÷2= 5+6+7=18÷2=9 (s(s-a) (s-b) (s-c) =(9)(9-5)(9-6)(9-7)=(9(4)(3)(2)=than you find pair of these numbers than c your answer
Answered by
1
Perimeter= 5+6+9= 20 cm
Semi perimeter = 20/2 = 10 cm
Area = { 10 ( 10- 5) ( 10-6 ) ( 10- 9 )^ 0.5
= { 10 (5) (4) (1)} ^ 0.5
= 200 ^ 0.5
= √ 2
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