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What is the percentage increase in area when a triangle is cloned (so that we have two triangles in total) and the resulting two triangles are joined on their bases to form a parallelogram ?

Options a. 100% b. 150% c. 300% d. 120%

Read Solution (Total 1)

area of a triangle having base b and height h given by 1/2(b*h)
when two triangles are mounted onto their bases to form a parallelogram, then area would become b*h
percentage increase of area= (new area- area of original triangle)/(area of the original triangle) X 100%
=(b * h)-1/2(b*h) /1/2(b * h) * 100%
= (1-1/2) / (1/2)X100%
=100%
10 years agoHelpfull: Yes(0) No(0)

CSC Other Question

Let x,y and z be three sides of a triangle of a triangle of area m. Let w = 2(x + y + z). Then which of the following is true.

a.2m*m/w = (w/4-a)(w/4-b)(w/4-c) b. 4m*m/w = (w/4-a)(w/4-b)(w/4-c) c. b. 2m*m/w = (w/2-a)(w/2-b)(w/2-c) Can you give a simple formula to find average of sum of squares of first n natural numbers ?

Answer 1

(n+1)(2n+1)/6 can be used to calculate the average of sum of first n natural numb