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Allwin Agnel @pagalguy

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# Mensuration, Geometry & Co-ordinate Geometry

ABCD is a convex quadrilateral in which <(BAC) = <(CBD) = 30 deg, <(CAD) = 60 deg, <(CDB) = 15 deg. If E is the point of intersection of AC and BD, then measure of <(BEA) in degrees (is)
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ABCD is a square of a side is 10 units.There are four point p,q,r,s inside the square that triangle ABP,BCQ,CDR and DAS(triangle) are equilateral triangle .Find the area in(Sq unit) of a quadrilateral PQRS?

(1)100(rt3-1)

(2)100(2-rt3)

(3)100(2rt3-1)

(4)20(2-rt3)

• good ques. 05 Nov.
• 100(2-rt(3)) ?. 07 Nov.

The angle between two side of a plot measuring 32mand24m is a right angle .The other side measure 25 each and other three angle are not right angle.The area of a plot is

(1)768

(2)534

(3)684

(4)96.5

• thanks. 02 Nov.
• 3. 05 Nov.
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Find the area of a pentagon whose vertices are (-1,0),(5,0),(6,2),(2,5)and(-3,1)?

(1).27.5

(2)28

(3)27

(4)24.5

• pl exp some. 01 Nov.
• 27\. Divide the Pentagon into 3 triangles and calculate t.... 07 Nov.
@karan77sethi 2

pl exp some

@goputrigs 2

27. Divide the Pentagon into 3 triangles and calculate their respective areas.

There are 6 points on a circle. Each point can be identified without relating it to any other points. Five events occur at 5 of these points,one after the other and each one at a different point. In how many ways can they occur such that no two successive events occur at adjacent points?

a)84

b)108

c)144

d)14

ans is 84 ! plz explain hw ?

78 Identical cubes with edges is 2cm each are joined together to form a cuboid.If the perimeter of the base of the cuboid is 64cm,The number of cubes along the height of the cuboid is

hey can sum1 plz tell me da weightage of mensuration n coordinat geometry questions in cat?

• 4 to 6 questions for sure..may increase this year. 29 Sep.

A cube of side length 3 cm weighs 12 kg . What is the weight of the similar cube of same material whose side length is 12 cm

• 768. 01 Nov.
• 768. 01 Nov.

volume of a sphere, a cube, a tetrahedron and an octahedron are same. For which of the following sturctures, it will have maximum surface area?? what is the rating of their surface areas frm highest t least??

• Tetrahedron > Octahedron > Cube > Sphere. 20 Sep.
• solution please??? tetra > octa > hexa > sphere.......... 20 Sep.
CAN CAN
Shashi Bhushan @ShashiBharti 20

Tetrahedron > Octahedron > Cube > Sphere

hank moody @hankmoody 28

tetra > octa > hexa > sphere......how so??

can anyone tell the formula for height of a regular tetrahedron?

• sqrt(10)*a. Where a is the side length of the cube from w.... 17 Jun.
Jaurabh Soglekar @Saurabh.Acejay 6

sqrt(10)*a. Where a is the side length of the cube from which the tetrahedron is formed.

can anyone tell the formula for height of a regular tetrahedron?

can anyone tell the formula for height of a regular tetrahedron?

can anyone tell the formula for height of a regular tetrahedron?

The base of an isosceles triangles is root2. The medians to the legs intersect each other at right angles.The area of the triangle is ?

a) 1.5 b)2 c)2.5 d)3.5

Can any1 please solve this sum ?

• median is also perpendicular bisector....use that fa.... 10 Sep.
Raj Malhotra @greatheights123 32

median is also perpendicular bisector....use that fact and find area= 1/2 base *height

ABCD is acyclic quadrilateral, AB is a diameter of the circle. If angle ACD=50, the value of angle BAD is..??

@prialall @piyush5337 Refer the attachment

Trigonometry :At the foot of a mountain the elevation of its summit is 45 degree ,after ascending 1000m towards the mountain up a stop of 30 degree inclination , the elevation is found to be 60 degree .Find the height of the mountain.

• 1 Like
• thanx a lot . . @garry1337. 03 Mar.

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