by PQR do you mean a sector? Generally circles are not described using three points.
Anyway, the area of a sector is
a = 1/2 r^2 θ
the area of a circle PQR with centre O is 72 cm square. what is the area of sector POQ if angle POQ is equal to 40 degree?
9 answers
The area of a circle PQR with centre O is 72cmsquare.What is the area of sector PQR,if angle PQR=40degree
23cm
That is also my question
Who can solve it for me
Who can solve it for me
72+6
40/360=
1/9
1/9*72
=8cm squared
1/9
1/9*72
=8cm squared
Area of a sector=Angle÷ 360×π r×r
40÷360×22÷7×72×72
Pls continue from there
40÷360×22÷7×72×72
Pls continue from there
A=40/360×72
A=8cm²
A=8cm²
Area of circle=72cm square
Acircle=3.142×rsquare
72=3.142×r square
r square=72\3.142
r square=22.91
SQUARE ROOT BOTH SIDES
Square root r square=square root 22.91
r=4.78~4.8
Asector=40/360×3.142×4.8 square
Asector=2895.6672/360
Asector=8.04352cm square~8cm square
Acircle=3.142×rsquare
72=3.142×r square
r square=72\3.142
r square=22.91
SQUARE ROOT BOTH SIDES
Square root r square=square root 22.91
r=4.78~4.8
Asector=40/360×3.142×4.8 square
Asector=2895.6672/360
Asector=8.04352cm square~8cm square