ABC and BDE are two equilateral triangles
such that D is the mid-point of BC. If
AB = 20 cm, find the area of the shaded
portion. [Take V3 = 1:73]
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Answered by
4
Answer:
129.75 cm^2
Step-by-step explanation:
AB=BC=AC=20
D is the mid point of BC
E is the mid point of AB
so EB=BD=ED=10
area of shaded region=area of equilateral triangle ABC-area of equilateral triangle BDE
=√3xa^2/4 -√3xa^2/4
=√3/4(20^2-10^2)
=√3/4(400-100)
=1.73/4 X 300
=129.75 cm^2ans
Answered by
1
Step-by-step explanation:
129.75
sorry but I don't use instà
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