Question

9. The length and breadth of a rectangle are 12cm and 9cm respectively. Find the side of the equilateral triangle with its perimeter equal to that of the rectangle​

Answer 1

Answer:

this is your

Step-by-step explanation:

first let's find the perimeter of the rectangle

formula: perimeter = 2 (l+b)

perimeter=42

perimeter of the=perimeter of the square

(to find perimeter of a square) 4s=perimeter

substituting the value of the perimeter

4S=42cm

s=42cm/4

proof:

perimeter of a square=4s

substituting of the value of,

4*10.5=42

Answer 2

Answer:

Perimeter of the rectangle = 2(l+b)

hence, perimeter = 2×(9+12)

= 34cm

PERIMETER OF RECTANGLE= PERIMETER OF EQUILATERAL TRIANGLE

All three-sides of an equilateral triangle are equal

Hence, each side= 34÷3

= 11.33c

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