In the figure (i) given below, calculate the area of the shaded region correct to two decimal places. (Take pie =3.142)
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Answered by
13
step by step..
to get the radius by using Pythagoras
r square = (5) square + (12) square
r square = 25 + 144
r square = 169
r = 13 cm
area of shaded region = area of circle - area of rectangle
= πr square - l X b
= 3.142 X 13 X 13 - 5 X 12
= 530.998 - 60
= 470.998 CM square
I hope this will help you...
to get the radius by using Pythagoras
r square = (5) square + (12) square
r square = 25 + 144
r square = 169
r = 13 cm
area of shaded region = area of circle - area of rectangle
= πr square - l X b
= 3.142 X 13 X 13 - 5 X 12
= 530.998 - 60
= 470.998 CM square
I hope this will help you...
farzannasim786:
sorry! this not the ri8 answer
why
the answer is 72.75 cm^2
I think you have wrong answer you can do it by your way and see it is not possible (72.75 X 72.75) is more than the whole area of circle and area of shaded region is less than area of circle because it lie inside the circle is it ok
okk
i will see
Answered by
26
Answer:
Step-by-step explanation:
ABCD is a rectangle whose length=12 cm and breadth =5 cm
Diameter^2=Length^2 + breadth^2
Diameter=√(12^2+5^2)
Diameter=√(169)=13cm
Therefore,Radius=13/2=6.5cm
Area of a circle=πr^2
=3.142×6.5×6.5
=3.142×42.25
=132.75cm square
Area of rectangle=l×b
=12×5
=60cm square
So, area of shaded portion
=132.75-60=72.75cm square
Hope it helps!!!!
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