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20 points help help help-example-1
User Knelis
by
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2 Answers

2 votes

Answer:

Area = 147pi cm²

Perimeter = (21pi + 28) cm

Explanation:

Angle at the centre appear to be 270°

Area = (270/360) × pi × 14²

= 147pi cm²

Perimeter =

[(270/360) × 2 × pi × 14] + 14 + 14

(21pi + 28) cm

User Winchestro
by
7.7k points
6 votes

The perimeter of the shape is 94 cm and the area is 462 sq cm.

Explanation:

Given,

The radius (r) = 14 cm

To find the area and perimeter of the given shape.

The given shape is
(3)/(4) of the full circle.

Formula

The perimeter of the circle = 2πr

The perimeter of the given shape =
(3)/(4)(2πr)+r+r =
(3)/(4)(2πr)+2r

The area of the circle = πr²

Now,

The perimeter of the given shape =
(3)/(4)(2×
(22)/(7)×14)+2×14 = 94 cm

The area of the given shape =
(3)/(4)(πr²)

=
(3)/(4)×
(22)/(7)×14² = 462 sq cm

User Cababunga
by
8.0k points

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