Question

(ख) निम्नलिखित वाक्यों के अर्थ के आधार पर भेद लिखिए-
1. अब आप मेरी खबर नहीं लोगे।
2. यह काम शाम तक होना चाहिए।
3. स्वामीजी का प्रवचन सुनने लाखों लोग आए हैं।
4. फूल मत तोड़ो।
5. क्या तुमने पत्र नहीं पढ़ा था?
6. अरे! यह चोट कैसे लगी?
7. आपकी इच्छा पूर्ण हो!
8. ईश्वर तुम्हारा परिश्रम सफल करे।
9. यदि दीपक चलेगा तो मैं भी चलूँगा।
10. अगर पढ़ते तो अच्छे अंक आते।​

Answer 1

Answer:

Answer:

Given :-

The diameter of the wheel of a vehicle is 1.4 m.

To Find :-

How many rotations will the wheel complete in traveling a distance of 2.2 km.

Formula Used :-

{\red{\boxed{\large{\bold{Circumference\: of\: Circle\: =\: 2{\pi}r}}}}}

CircumferenceofCircle=2πr

where,

r = Radius

Solution :-

First, we have to find the radius,

As, we know that,

★ \sf Radius =\: \dfrac{Diameter}{2}Radius=

2

Diameter

★

Then,

↦ \sf Radius =\: \dfrac{1.4}{2}Radius=

2

1.4

➦ \sf\bold{\pink{Radius =\: 0.7\: m}}Radius=0.7m

Now, we have to find circumference of a circle,

Given :

Radius = 0.7 m

According to the question by using the formula we get,

⇒ \sf Circumference\: =\: 2 \times \dfrac{22}{7} \times 0.7Circumference=2×

7

22

×0.7

⇒ \sf Circumference\: =\: \dfrac{44}{7} \timesCircumference=

7

44

×

⇒ \sf Circumference =\: \dfrac{44}{\cancel{7}} \times \dfrac{\cancel{7}}{10}Circumference=

7

44

×

10

7

⇒ \sf Circumference =\: \dfrac{44}{10}Circumference=

10

44

➠ \sf\bold{\purple{Circumference =\: 4.4\: m}}Circumference=4.4m

Hence, the circumference of a circle is 4.4 m.

Now, we have to find how many rotations will the wheel complete in traveling a distance of 2.2 m,

As we know that,

✧ 1 kilometres = 1000 m ✧

Then, 2.2 km = 2.2 × 1000

\implies⟹ 2200 m

Hence, number of rotation will be,

↪ \sf \dfrac{2200}{4.4}

4.4

2200

↪ \sf \dfrac{2200 \times 10}{44}

44

2200×10

↪ \sf \dfrac{\cancel{22000}}{\cancel{44}}

44

22000

➤ \sf\bold{\green{500}}500

\therefore∴ 500 rotations will the wheel complete in traveling a distance of 2.2 m.