Math, asked by deivakc5haA0nnetha, 1 year ago

The area of two similar triangles are 49 cm square and 81 cm square,find the ratio of their perimeter

Answers

Answered by PrabhavBahety
1
The ratio of their perimeter will be 7:9 .
Answered by deepti100428
1

area ΔABC = 1/2 * base * height

In similar triangles, base1 / base2 = height1 / height2 = side1/ side2  (of the three corresponding sides).

Also   Area1 / Area2  = (altitude1 / altitude2 )^2

Ratio of altitudes = square root( 81/49) = 9/7  > 1

Altitude of smaller triangle =  4.5 / (9/7) = 3.5

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