Question

Q1) The perimeter of an isosceles triangle and an equilateral triangle are equal.If the side of equilateral triangle id 11cm and the unequal side of isosceles trianhle is 13cm, what is the length of its equal sides?

Q2) A rectangle and a square have equal perimeter 100m.The width of the rectangle is 3m less than the side of the square.Find the dimensions of the rectangle

Q3) The perimeter of a rectangle is 16cm.What will be the length and breadth of that rectangle (in whole numbers) for a) maximum area b) minimum area?

Q4) (question 16 in the picture is this question)

Answer 1

perimeter of an isoscles triangle= perimeter of an equilateral triangle;;;; or a+a+b=3 side ::; 2a+b= 3×11;;; or 2a+13= 33 ;;;; or 2a= 33-13:: or 2a= 20;;; or a= 20/2 a= 10