Instructions

Instructions: Study the following diagram to answer the questions.



Question 136

If what diameter of each circle is 14 cm and DC = CE, the area of triangleBDE is

Solution
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In triangle BDE ,
DE = 28 + 28 = 56 cm
BC = 28 cm
are  of triangle BDE
= $$\frac{1}{2}$$ x DE x BC
= $$\frac{1}{2}$$ x 56 x 28 = 784 sq.cm

 

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