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olga55 [171]
3 years ago
15

The length of the minute hand of a clock is 14 cm. The area swept by the minute hand in 15 minutes is

Mathematics
1 answer:
____ [38]3 years ago
8 0

Answer:

c

Step-by-step explanation:

In 60 minutes, minute hand completes 360

0

 i.e., one rotation.

⇒ in 1 minute, minute hands completes  

60

360

∘

​

=6

∘

 

Hence, in 5 minutes the angle covered is is 6×5=30

o

.

The angle of sector formed is 30

o

.

The area swept by the minute hand in 5 minutes=

360

30

​

×π×14×14

Using π=

7

22

​

, we get

The area swept by the minute hand in 5 minutes =

3

154

​

 sq. cm

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Juan drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. When Juan drove h
kolezko [41]

Answer:Juan live 384 miles from the mountains.

Step-by-step explanation:

Let x be the speed  of Juan for trip to the mountains

Time taken by Juan to reach the mountains=8 hours

then distance traveled by Juan for trip to mountain= speed × time=8x..........(1)

Time taken by Juan to reach the home= 6 hours

Speed increased by 16 miles per hour ∴ the resultant speed to reach the home by Juan =x+16

then distance traveled by Juan to reach the home =speed × time

= (x+16)6......................(2)

Now distance is same in both the case (1) and (2),we get

8x= (x+16)6

⇒8x=6x+96..............(by solving brackets)

⇒2x=96..............(subtracting 6x from both sides )

⇒x=48....................(dividing 2 from both sides)

Putting this value in (1) ,we get

Distance traveled by Juan for trip to mountain =8×48=384 miles.

∴ Juan live 384 miles from the mountains.


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4 years ago
The lesser of two consecutive even integers is 10 more than one-half the greater. Find the integers.
LiRa [457]
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Step-by-step explanation:

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