Home
Class 7
MATHS
A well of diameter 150 cm has a stone ...

A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 660 cm, then find the width of the parapet.

Promotional Banner

Topper's Solved these Questions

  • MENSURATION-1

    RD SHARMA ENGLISH|Exercise All Questions|162 Videos

  • OPERATIONS ON RATIONAL NUMBERS

    RD SHARMA ENGLISH|Exercise All Questions|101 Videos

Similar Questions

Explore conceptually related problems

A well, whose diameter is 7m, has been dug 22.5 m deep and the earth dugout is used to form an embankment around it. If the height of the embankment is 1.5 m, find the width of the embankment.

Ritu has a picture in the shape of a regular hexagon. She wants to put a green ribbon around the edges. If the length of the side of the hexagon is l , find the rule that gives the length of the ribbon required to put around the picture.

In a circle of diameter 40 cm. The length of a chord is 20 cm. Find the length of minor arc of the chord.

In the figure, the area of the shaded portion is 770 cm^(2) . If the circumference of the outer circle is 132 cm, find the width of the shaded part

A well of diameter 2 m is dug 14 m deep. The earth taken out of it is spread evenly all around it to form an embankment of height 40 cm. Find the width of the embankment.

In a circle of diameter 60 cm the length of a chord is 30 cm. Find the length of the minor and major arcs of the chord.

The area of a rectangular sheet is 500 cm^2. If the length of the sheet is 25 cm, what is its width? Also find the perimeter of the rectangular sheet.

The length of each edge of a rectangular box is l cm. Find its total surface area.

Find the perimeter of the rectangle whose length is of 15 cm and width is of 8 cm

The diameters of the top and the bottom portions of a bucket are 42 cm and 28 cm. If the height of the bucket is 24 cm, then find the cost of painting its outer surface at the rate of 5 paise / cm^2 .

RD SHARMA ENGLISH-MENSURATION-2-All Questions
  1. The diameter of the driving wheel of a bus is 140 cm. How many revo...

    Text Solution

    |

  2. A water sprinkler in a lawn sprays water as far as 7 m in all direc...

    Text Solution

    |

  3. A well of diameter 150 cm has a stone parapet around it. If the len...

    Text Solution

    |

  4. An ox in a kolhu (an oil processing apparatus) is tethered to a rop...

    Text Solution

    |

  5. Find the area of a circle of radius 4.2 cm

    Text Solution

    |

  6. Find the area of a circle of diameter 7 cm.

    Text Solution

    |

  7. The circumference of a circle is 44 cm. Find its area.

    Text Solution

    |

  8. The area of a circle is 616 c m^2dot Find the radius of the circle.

    Text Solution

    |

  9. A copper wire, when bent in the form of a square, encloses an area ...

    Text Solution

    |

  10. A circular grassy plot of land, 42 m in diameter, has a path 3.5 m ...

    Text Solution

    |

  11. A paper is in the form of a rectangle A B C D in which A B=20\ c m and...

    Text Solution

    |

  12. Find the area of the shaded region given in Fig. 12.72, where ABCD is ...

    Text Solution

    |

  13. The circumferences of two circles are in the ratio 2: 3. Find the r...

    Text Solution

    |

  14. The areas of two circles are in the ratio 16 : 25. Find the ratio of t...

    Text Solution

    |

  15. A square park has each side of 100 m. At each corner of the park, t...

    Text Solution

    |

  16. Four equal circles are described about the four corners of a square...

    Text Solution

    |

  17. A horse is placed for grazing inside a rectangular field 70 m by 52...

    Text Solution

    |

  18. P Q R S is a diameter of a circle of radius 6 cm. The lengths P Q ,\...

    Text Solution

    |

  19. Find the area of a circle whose radius is (a)7 cm    (b) 2.1 m (c)...

    Text Solution

    |

  20. Find the area of a circle whose diameter is (a)8.4 cm    (b) 5.6 m (c)...

    Text Solution

    |