Area Related to Circles Test

Result

Area Related to Circles Test - 10

Score
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Weekly Quiz Competition

Question 1
1 / -0

The perimeter of a sector of a circle with radius 5.7cm is 27.4cm. The length of the arc is

A
16cm

B
11cm

C
14cm

D
15cm

Solution

Given: Perimeter of Sector = 27.4 cm
⇒2 × Radius + Length of arc = 27.4 cm
⇒ 2 × 5.7 + Length of arc = 27.4 cm
⇒ Length of arc = 27.4 – 11.4 = 16 cm
Question 2
1 / -0

The angle described by the hour hand in 2 hours is

A
60^∘

B
90^∘

C
360^∘

D
30^∘

Solution

∵ Angl described by the hour hand in 12 hours = 360^∘
∴ Angle described by the hour hand in 2 hours = 360^∘/12×2=60^∘
Question 3
1 / -0

The angle described by the minute hand in 5 minutes is

A
30^∘

B
60^∘

C
360^∘

D
90^∘

Solution

∵ Angle described by the hour hand in 60 minutes = 360^∘
∴ Angle described by the hour hand in 5 minutes = 360^∘/60 × 5 = 60^∘