Question

please give me answer this question

Answer 1

The answer is 42 because there are 6 sides (square +triangle)of 7 cm side
So perimeter of square=4*side=28+Perimeter of triangle=3*side=21-One side that is repeated
=28+21-7
=42 cm
Hope it helps:)

Answer 2

it's answer is 42because the perimeter of square is 4a and perimeter of triangle is 3a and in that one side is common