Question

find the area of the sector of a circle with diameter 40 cm, if the angle of the sector is 60 degree??

Answer 1

Answer:

Area of the circle = 484 cm2

Area of the square = Side2

⇒484=Side2⇒222=Side2⇒Side=22 cm

Perimeter of the square = 4×Side

Perimeter of the square = 4×22

= 88 cm

Length of the wire = 88 cm

Circumference of the circle = Length of the wire = 88 cm

Now, let the radius of the circle be r cm.

Thus, we have:

2πr=88⇒2×

22

7

×r=88⇒r=14

Area of the circle = πr2

=

22

7

×14×14=616 cm2

Thus, the area enclosed by the circle is 616 cm2.

Step-by-step explanation:

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Answer 2

Answer:

209.523 cm²

Step-by-step explanation:

See the Attached image