Home
Class 12
PHYSICS
The radius of a circle is 2.12 metre. It...

The radius of a circle is 2.12 metre. Its area according to the rule of significant figures is

A

`4.5216 cm^(2)`

B

`4.521 cm^(2)`

C

`4.52 cm^(2)`

D

`4.5 cm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • UNITS AND MEASUREMENTS

    AAKASH SERIES|Exercise EXERCISE -3|66 Videos

  • UNITS AND MEASUREMENTS

    AAKASH SERIES|Exercise EXERCISE- 1 B|28 Videos

  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise PRACTICE EXERCISE|45 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET ADVANCED (INTEGER TYPE QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

The radius of a circle is 21.2 m. Its area according to the rule of significant figures is

The radius of a disc is 1.2 cm. Its area according to idea of significant figures, will be given by :-

The radius of a circle is 7 cm. Find its area

The radius of a circle is 7. What is the area?

The radius of a sphere is 1.41 . its volume to an appropring number of significant figure is

The radius of a circle is stated as 2.12 cm. Its area should be written as

Mention the rules for finding the significant figures.

The radius of a thin wire is 0.16mm . The area of cross section taking significant figures into consideration in square millimeter is

The radius of a thin wire is 0.16mm . The area of cross section taking significant figures into consideration in square millimeter is

(a). Calculate the area enclosed by a circle of radius 0.56 m to the correct number of significant figures. (b) . Calculate the area enclosed by a circle of diameter 1.12 m to the correct number of significant figures.

AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -2
  1. A Vernier callipers has 1 mm marks on the main scale . It has 20 equa...

    Text Solution

    |

  2. A screw gauge gives the following reading when used to mesure the diam...

    Text Solution

    |

  3. The vernier scale of a travelling microscope has 50 divisions which co...

    Text Solution

    |

  4. Time for 20 oscillations of a pendulum is measured as t(1)=39.6" "s,...

    Text Solution

    |

  5. The measured mass and volume of a body are 53.63 g and 5.8cm^(3) resp...

    Text Solution

    |

  6. A Vernier callipers has 1 mm marks on the main scale . It has 20 equa...

    Text Solution

    |

  7. Which of the following numbers has least number of significant figures...

    Text Solution

    |

  8. The number of significant figures in 0.0006032 is

    Text Solution

    |

  9. The number of significant figures in 6.320 is

    Text Solution

    |

  10. The radius of a circle is 2.12 metre. Its area according to the rule o...

    Text Solution

    |

  11. Epistasis and dominance are respectively

    Text Solution

    |

  12. The mass of a block is 87.2 g and its volume is 25 cm^(3). What is its...

    Text Solution

    |

  13. The length of a rod is measured by different instruments. Of the follo...

    Text Solution

    |

  14. 2.34 is obtained by rounding of the number

    Text Solution

    |

  15. When 0.0003125 is reduced to 3 significant figures its value is

    Text Solution

    |

  16. Gibbs-Helmoholtz equation relates the free energy change to the enthal...

    Text Solution

    |

  17. 9765 div 14.39 = 678.59625. This quotient on rounding off to two signi...

    Text Solution

    |

  18. The value of 124.2 - 52.487 with due regard to significant places is

    Text Solution

    |

  19. The value of 42 xx 0.041 with due regard to significant figures is

    Text Solution

    |

  20. sqrt(58.97)=

    Text Solution

    |