Question

The perimeter of square sheet is same as a rectangular sheet. If the side of square sheet is 30 cm. and the length of the rectangular sheet is 45cm. The area of the rectangular sheet is
1. 800 sq. cm
2. 675 sq. cm
3. 240 sq. cm
4. 600 sq. cm​

Answer 1

Step-by-step explanation:

p of square sheet =4x

$= 30 \times 4 = 120cm \\ perimeter \: of \: rectang le \\ = 2 \times ( l + b) = 120cm \\ 2 \times (45 + x) =120cm \\( 45 + x) = 120 \div 2 = 60 \\ (45 + x) = 60 \\ x = 60 - 45 \\ = 15cm \\ length = 45\\ bredth = 15 \\ \\ area \: of \: rectangle \: = l \: \times b \\ 45 \times 15 = 675sq \: cm$

option 2. 675 cm