# CBSE Class 9 Answered

**A concrete pillar 15 m high has a cross section which is square of side 3 m. Find the cost of painting its top and four walls at the rate of Rs 4 per m**

^{2}.
Asked by Topperlearning User | 23 Aug, 2017, 12:58: PM

Expert Answer

Given: length (a) =3 m, breadth (a) =3 m and height(k)=15 m

Area of four walls and top

=_{}

_{= }

_{}

Cost of painting 1 m^{2} = Rs 4

Therefore, cost of painting 189 m^{2 }=Rs {189×4}

=Rs 756

Answered by | 23 Aug, 2017, 14:58: PM

## Application Videos

## Concept Videos

CBSE 9 - Maths

Asked by sg871787 |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by dhyeyvachani26.tl |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by arajeevshashank |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by raviraj23032003 |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by Topperlearning User |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by Topperlearning User |

ANSWERED BY EXPERT

CBSE 9 - Maths

Asked by Topperlearning User |

ANSWERED BY EXPERT