Topics

A) 12 m, 10 m. |

B) 24 m. 10 m. |

C) 40 m. 30 m. |

D) 16 m. 10 m. |

Correct Answer:

C) 40 m. 30 m. |

Description for Correct answer:

The cost of cultivating the land is Rs.6000/- at Rs. 5 per sq. m.

Area of the land = \( \Large \frac{6000}{5} \) = 1200 sq. m.

Let. the length be 4x mts.

Let the breadth be 3x.

Area of the land = \( \Large 4x \times 3x = 12x^{2} \)

\( \Large 12x^{2} = 1200 \)

\( \Large x^{2} = 100 \)

\( \Large x = 10 \)

Length =\( \Large 4 \times 10 \) = 40 mts.

Breadth =\( \Large 3 \times 10 \)= 30 mts.

The cost of cultivating the land is Rs.6000/- at Rs. 5 per sq. m.

Area of the land = \( \Large \frac{6000}{5} \) = 1200 sq. m.

Let. the length be 4x mts.

Let the breadth be 3x.

Area of the land = \( \Large 4x \times 3x = 12x^{2} \)

\( \Large 12x^{2} = 1200 \)

\( \Large x^{2} = 100 \)

\( \Large x = 10 \)

Length =\( \Large 4 \times 10 \) = 40 mts.

Breadth =\( \Large 3 \times 10 \)= 30 mts.

Part of solved Area and perimeter questions and answers : >> Elementary Mathematics >> Area and perimeter

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