Question

A wire is in the form of an equaliteral triangle with area 5 meter square. If it changed into an circle what will be radius of the circle?
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Answer 1

Answer:

(1.65).A. cm^2

Step-by-step explanation:

Let the length of each side of an equilateral triangle is x cms. ,then area of triangle

is. (√3.x^2)/4 cm^2. and the length of wire is 3x cms. , accordingly:-

(√3.x^2)/4=A. or. x^2 = 4A/√3……………..(1).

Now the same wire is bent to form a circle of radius r cms.,therefore

2.π.r = 3x. or. r= 3x/2.π…………………….(2)

Area of the circle = π.r^2 = π. (9.x^2/4.π^2).

= 9.x^2/4π. Putting x^2 = 4.A/√3 from eqn. (1).

= 9.4.A/4π.√3.

= 3√3.A.7/22.

=(21√3/22).A cms^2.= (21×1.732/22).A = (1.65).A. cm^2. Answer

Answer 2

Hi fast question and answer his right

(1.65) =A:cm.2