Aptitude - Arithmetical Ability

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31.

Given the area of a triangle a 205 cm2, if the side AB is 411cms find the length of the perpendicular dropped on AB from opposite vertex??                          
A. 14 B. 8
C. 12 D. 10



32.

The length and diagonal of a rectangle are 12 cm and 13 cms respectively find its perimeter??                          
A. 34 B. 17
C. 68 D. 24



33.

The length of a rectangualr hll is 5m more than its breadth. The area of the hall is 750 m. The length of the hall is?                          
A. 15 m B. 22.5 m
C. 25 m D. 30 m




34.

What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad??                          
A. 814 B. 820
C. 840 D. 844



35.

The area of a rectangle is 460 square metres. If the length is 15% more than the breadth, what is the breadth of the rectangular field??                          
A. 15 metres B. 26 metres
C. 34.5 metres D. None of these



36.

What is the area of an equilateral triangle of side 16cm ??                          
A. 243 cm2 B. 64 3 cm2
C. 363 cm2 D. 323 cm2



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