# Mental Ability-Basic Geometry (NCO- Cyber Olympiad Class 9): Questions 1 - 5 of 25

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## Question number: 1

» Mental Ability » Basic Geometry

### Question

Three circles of radii 2 cm each touch each, other externally. Then the area of the triangle with vertices at centers of these circles is________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | More than 6 but less than 7 | |

b. | More than 7 | |

c. | Less than 6 | |

d. | All of the above |

## Question number: 2

» Mental Ability » Basic Geometry

### Question

How many circles can be drawn though two given points.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 1000 only | |

b. | 10 only | |

c. | Infinity | |

d. | 2 only |

## Question number: 3

» Mental Ability » Basic Geometry

### Question

Four circles of radii 4 cm each touch each, other externally. Then the area of the square with vertices at centers of these circles is________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | More than but Less than | |

b. | Less than | |

c. | More than | |

d. | Equal to |

## Question number: 4

» Mental Ability » Basic Geometry

### Question

If the radius of a circle is doubled, then its area is ________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | Not related to the area of the smaller circle | |

b. | 4 times the area of the smaller circle | |

c. | Doubled | |

d. | None of the above |

## Question number: 5

» Mental Ability » Basic Geometry

### Question

Complete the missing portion of the given Figure A.

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |