In rectangle ABCD ,O is the centre of circle ,length DC is 32cm, radius of circle is 20cm then find Area of rectangle
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0
Answer:
Diagonal AC passes through the centre of the circle.
∴ AC is the diameter.
Now, area of rectangle ABCD= AB×AC
= 28×21
= 588cm
2
In △ABC
AC
2
=AB
2
+CB
2
=28
2
+21
2
=784+441
=1225
⇒AC
2
=
1225
⇒AC=35 cm
∴ radius =
2
AC
=
2
35
= 17.5
Area of the circle = πr
2
=
7
22
×(17.5)
2
= 962.5cm
2
Area of the shaded region = Area of the circle − Area of rectangle ABCD
= 962.5−588cm
2
= 374.5cm
2
Answered by
0
Answer:
area of rectangle lxb
Step-by-step explanation:
this is your answer bruh
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