Question

Find the missing values:
please help me to solve this question
chapter-13 perimeter and area
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Answer 1

$area \: of \: the \: triangle = {1256cm}^{2} \\ height \: of \: the \: triangle = 3.14cm \\ base \: of \: the \: triangle = \frac{area\times 2}{height} \\ = \frac{1256 \times 2}{31.4} = 80cm$