Home
Class 7
MATHS
A wire is looped in the form of a circle...

A wire is looped in the form of a circle of radius 21 cm. It is rebent in the shape of an equilateral triangle. Find the area of the triangle. (Take `pi = 22/7`)

A

`484 cm^2`

B

`484 sqrt(3) cm^2`

C

`308 cm^2`

D

`308 sqrt(3) cm^2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CIRCUMFERENCE AND AREA OF A CIRCLE

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET - 22 |10 Videos

  • CIRCUMFERENCE AND AREA OF A CIRCLE

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET - 22 |10 Videos

  • CIRCLES

    S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST |20 Videos

  • DATA HANDLING

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet - 24 |10 Videos

Similar Questions

Explore conceptually related problems

if the side of equilateral triangle is 4cm find the area of ex circle

Find the area of an equilateral triangle of side 6 cm.

A wire is looped in the form of a circle of radius 35 cm. If it is rebent in the form of a square,what will be the length of each side of the square?

Find the area of an equilateral triangle whose side is a cm.

The side of an equilateral triangle is 6sqrt(3) cm. Find the area of the triangle. [Take sqrt(3)=1.732 ]

A wire is bent into the form of a circle, whose area is 154 cm^(2) . If the same wire is bent into the form of an equilateral triangle, the approximate area of the equilateral triangle is

Area of an equilateral triangle inscribed in a circle of radius a is

S CHAND IIT JEE FOUNDATION-CIRCUMFERENCE AND AREA OF A CIRCLE -QUESTION BANK - 22
  1. If the difference between the circumference and diameter of a circle i...

    Text Solution

    |

  2. If the circumference of a circle is reduced by 50%, then by how much p...

    Text Solution

    |

  3. A wire is looped in the form of a circle of radius 21 cm. It is rebent...

    Text Solution

    |

  4. A circular wire of diameter 42 cm is bent in the form of a rectangle w...

    Text Solution

    |

  5. If the areas of a circle and a square are equal then the ratio of t...

    Text Solution

    |

  6. A right angled isosceles triangle is inscribed in a circle of radius r...

    Text Solution

    |

  7. The largest possible square is inscribed in a circle of 2pi units circ...

    Text Solution

    |

  8. If the circumference and the area of a circle are numerically equal, t...

    Text Solution

    |

  9. What is the perimeter of a square whose area is equal to that of a cir...

    Text Solution

    |

  10. If the circumference of a circle increases form 4pi to 8pi , what ...

    Text Solution

    |

  11. This figure is made up of a semicircle and quarter of a circle. The le...

    Text Solution

    |

  12. The figures in the rectangle are 8 identical quadrants. What is the ar...

    Text Solution

    |

  13. X and Y are the centres of 2 circles on a square as shown in the figur...

    Text Solution

    |

  14. A wire is bent into the shape as shown. It is made up of 5 semi-circle...

    Text Solution

    |

  15. In the given figure, ABCD is a square with side 10 cm. BFD is an arc o...

    Text Solution

    |

  16. If a triangle of base 6 cm has the same area as that of a circle of ra...

    Text Solution

    |

  17. In the given figure, P is the centre of the circle. The area of the fi...

    Text Solution

    |

  18. Four identical coins are placed in a square. For each coin, the ratio ...

    Text Solution

    |

  19. ABCD is a square of side 5 cm. At the four corners, four circular arcs...

    Text Solution

    |

  20. In the given figure,MN=x and LN = x/2. What is the area of the shaded ...

    Text Solution

    |