Question

The total aTherea of 3 blades of a fan is (5)/(2)pi m^(2) . Two of the blades form an angle of 30° and the third blade forms an angle of 40° at the center.find the radius of the arc
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Answer 1

Answer:

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Answer 2

Answer:

ans: 3m

Step-by-step explanation:

• area sector =πr² * theta/360°
• The total area of the three sectors made by the blades would be the sum of the areas made by individual blades.
• Finding the radius:
• total area swept

=πr².theta1/360+πr².theta2/360+πr². theta3/360

=πr².30+30+40/360

5/2πm²=πr².30+30+40/360

5/2π=πr².100/360

r²=5/2.36/10

r=3m