cm is cut
Find the area of the remain
& In a circular table cover of radius 32 cm, a
design is formed leaving an equilateral
triangle ABC in the middle as shown in
Fig. 12.24. Find the area of the design.
B
VO
Fig. 12.24
can someone solve this?
Answers
Answered by
3
Step-by-step explanation:
Let ABC be the equi.triangle and O be the centre of circle of radius= 32 cm
Area of circle= πr^2
= (22/7×32×32)cm^2
= 22528/7 cm^2
Draw OM perpen.to BC
Now,angleBOM = 1/2×120°= 60°
So.From triangle BOM,we have
OM/OB= cos 60°(1/2)
OM= 16cm
BM/OB= cos 60°(1/2)
BM= 16√3cm
BC=2BM
= 32√3cm
hence,area of triangle BOC= 1/2BC.OM
=1/2×32√3×16
=768√3cm^2
Area of design = Area of O- Area of triangle ABC=
(22528/7-768√3)cm^2
Answered by
3
Answer:
good Morning ayushman
and thank u so much for answering my questions
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