Question

Question 1. Perimeter of a sector of a circle whose central angle is 90° and radius 7 cm is
A.25 cm
B. 27 cm
C.77 cm
D.7 cm​

Answer 1

Answer:

= 14 +11 = 25 cm

Step-by-step explanation:

Hope it helps you

Answer 2

GIVEN:-

• Central Angle = 90°
• Radius = 7 cm

TO FIND:-

• The Perimeter Of The Sector Of Circle

SOLUTION:-

As we know that the perimeter of a sector of a Circle is given by,

⇒ Perimeter = ϴ/360° × 2πr + 2r

• ϴ = Central angle.
• r = Radius.
• π = 22/7.

⇒ Perimeter = 90°/360° × 2 × 22/7 × 7 + 2 × 7

⇒ Perimeter = 1/4 × 2 × 22 + 14

⇒ Perimeter = 1/4 × 44 + 14

⇒ Perimeter = 11 + 14

⇒ Perimeter = 25

Hence the perimeter of the sector of the Circle is 25 cm

Option ( b ).