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In the given figure, ABCDEF is a regular hexagon whose side is 6 cm. APF, QAB, DCR and DES are equilateral triangles. What is the area (in cm2) of the shaded region?
Mensuration 2D mcq question image

A. 24√3

B. 18√3

C. 72√3

D. 36√3

Answer: Option C

Solution (By Examveda Team)

Area of Hexagon $$ = 6 \times \frac{{\sqrt 3 }}{4}{\left( 6 \right)^2} = 54\sqrt 3 {\text{ c}}{{\text{m}}^2}$$
Area of one part of Hexagon $$ = \frac{{54}}{6}\sqrt 3 = 9\sqrt 3 $$
Required area $$ = 54\sqrt 3 + 2 \times 9\sqrt 3 = 72\sqrt 3 {\text{ c}}{{\text{m}}^2}$$

Alternate Solution:
Counting the equilateral triangle figure = 8
Area of equilateral triangle is equal to $$ = 8 \times \frac{{\sqrt 3 }}{4} \times 6 \times 6 = 72\sqrt 3 {\text{ c}}{{\text{m}}^2}$$

This Question Belongs to Arithmetic Ability >> Mensuration 2D

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