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Step by step text solution for Find the area of a circle of radius 4.2 cm by MATHS experts to help you in doubts & scoring excellent marks in Class 7 exams.
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RD SHARMA-MENSURATION-2-All Questions
- A well of diameter 150 cm has a stone parapet around it. If the len...
02:37
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- An ox in a kolhu (an oil processing apparatus) is tethered to a rop...
02:06
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- Find the area of a circle of radius 4.2 cm
01:05
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- Find the area of a circle of diameter 7 cm.
01:19
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- The circumference of a circle is 44 cm. Find its area.
01:25
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- The area of a circle is 616 c m^2dot Find the radius of the circle.
01:49
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- A copper wire, when bent in the form of a square, encloses an area ...
02:17
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- A circular grassy plot of land, 42 m in diameter, has a path 3.5 m ...
02:57
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- A paper is in the form of a rectangle A B C D in which A B=20\ c m and...
02:24
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- Find the area of the shaded region given in Fig. 12.72.
04:36
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- The circumferences of two circles are in the ratio 2: 3. Find the r...
01:28
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- The areas of two circles are in the ratio 16 : 25. Find the ratio of t...
01:43
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- A square park has each side of 100 m. At each corner of the park, t...
02:26
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- Four equal circles are described about the four corners of a square...
02:16
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- A horse is placed for grazing inside a rectangular field 70 m by 52...
01:42
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- P Q R S is a diameter of a circle of radius 6 cm. The lengths P Q ,...
04:41
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- Find the area of a circle whose radius is (a)7 cm (b) 2.1 m (c)...
01:52
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- Find the area of a circle whose diameter is (a)8.4 cm (b) 5.6 m (c)...
05:28
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- The area of a circle is 154 c m^2dot Find the radius of the circle.
01:10
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- Find the radius of a circle, if its area is (a)4\ pi\ c m^2 (b) 55. 4...
02:48
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