Question

perimeter of rectangle
perimeter of square
perimeter of triangle
area of rectangle
area of square​

Answer 1

$\huge\underline\mathtt\red{Answer:}$

1. Perimeter of rectangle = 2(l+b)
2. Perimeter of square = 4× side
3. Perimeter of triangle = a + b + c
4. Area of rectangle = l × b
5. Area of square = (side)²

Answer 2

Answer:

$perimeter \: of \: rectangle \\ = 2(l + b) \\ \\ perimeter \: of \: square \\ = side \times 4 \\ \\ perimeter \: of \: triangle \\ = sum \: of \: all \: three \: sides \\ \\ area \: of \: rectangle \\ = l \times b \\ \\ area \: of \: square \\ = side \times side \\ = {(side)}^{2}$