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a) h  :  b  ->  9/4  :   44   -> 9  :  176

 

b)  Area of triangle = 1/2  x   b  x   h -> 1/2 x 9u x 176u -> 64152

     u2 -> (64152 x 2) / (9 x 176) = 81

     1u  -> 9

Height of triangle -> 9u -> 9 x 9 = 81 cm

Base of triangle -> 176u  -> 176 x 9 = 1584 cm

 

c) perimeter of equilateral triangle = 3 x base = 3 x 1584 = 4752 cm 

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