Question

20 A circle of radius 3 cm is removed from a circular sheet of radius 5 cm. Find the area of the remaining sheet?​

Answer 1

Remaining area = Area of larger circle - Area of small circle

Area of larger circle = pie*r^2

=22/7*5^2

=550/7

area of smaller circle = pie*r^2

=22/7*3^2

=198/7

=550 - 198/7

=352/7

Answer: 352/7cm^2

Answer 2

Answer:

50.24cm^2

Step-by-step explanation:

AREA OF CIRCLE WITH RADIUS 3CM =

$\pi {r}^{2}$

π(3)^2=9π. _______1

AREA OF CIRCLE WITH RADIUS 5CM

$\pi {r}^{2}$

π(5)^2=25π. ________2

ACCORDING TO QUESTION,

AREA OF 5CM RADIUS CIRCLE -AREAO OF 3CM RADIUS CIRCLE=AREA OF REMAINING

PUTTING VALUE FROM 1 AND 2

=25π-9π

=16π. ______ value if (π=3.14)

=16×3.14

=50.24 cm^2

#YOU CAN ALSO USE VALUE OF π=22/7 THEN THE ANSWER IS 16×22/7=50.28cm^2

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