A kite in the shape of a square with each diagonal 36 cm and having a tail in the shape of an isosceles triangle of base 10 cm and each side 6 cm, is made of three different shades as shown in the figure. How much paper of each shade has been used in it? [Take V11 = 3.31]
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kite is in a poop shape kaksa
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One shaded portion is ∆ABD.
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∴Kite is the shape of square, so diagonals are equal and bisect each other
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Second shaded portion is ∆BCD.
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Third shaded portion is ∆CEF in which
CE = CF = 6 cm and EF -10 cm.
Here, a = 6 cm, b = 6cm andc = 10 cm
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Area of triangle CFE
s=(6+6+10)/2
s=11cm
=√s(s-a)(s-b)(s-c)
=√11(11-6)(11-6)(11-10)
=√11*5*5*1
=5√11
=5*3.31
=16.55cm^2
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