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The diagonal of a square is twice the side of an eqilateral triangle. Find the ratio of the area of the square to the area of the triangle.


Prasad 24th Mar, 2020
Answers (3)
Afrin Hossain 24th Mar, 2020

Hello Prasad!

Side of square= a

Diagonal= √2*a

Side of equilateral triangle= a/√2

Area of square= a 2

Area of equilateral triangle= (√3/4)*( a/√2) 2 = (√3/8)* a 2

Ratio of area of square to triangle = a 2 /(√3/8)* a 2 = 8/√3

Hope this helped:)

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ginnisachdeva02_9364270 Student Expert 24th Mar, 2020

Hi Prasad!

Let side of equilateral triangle =x

Length of diagonal of square = 2x

Area of square= 1/2 (diagonal 1 )(diagonal 2)

Area of square = 1/2 (2x)²

Area of square = 1/2 (4x²)

Area  of square= 2x²


Find ratio of triangle to square:

triangle : square = √3/4 x² : 2x²

Divide both sides by x²:

triangle : square = √3/4 : 2

Multiply both sides by 4:

triangle : square = √3 : 8

Hope it helped to clear your delimma.

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Shiksha 24th Mar, 2020

Hello!

Let the diagonal of sq. be '2x' & side of equilateral be 'x' uts.

The side of sq will be (x√2) uts. (By using Pythagoras theorem)

(Side)²+(side)² = (2x)²

Therefore side of sq. Is x√2

Area of square = a² = ( x√2 )² = 2x²

Area of equilateral = √3/4 a² = √3/4 (x²)

Ratio of area of square: area of equilateral triangle = (2x²) ÷ (√3/4 x²) = 8 : √3

i hope this helps.

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