Question

if a square sheet has perimeter of 72cm then what is its area​

Answer 1

Answer:

324 sq.cm

Step-by-step explanation:

NOTE:

• Area of square = a^2
• Perimeter of square = 4a
• where a is each side of the square

Perimeter of sheet = 72

4a = 72

a = 72/4 = 18

Area = a^2

Area = (18) ^2

Area = 324

Answer 2

Answer:

324 cm

Step-by-step explanation:

$perimetre \: of \: square = 4 \times side \\ from \: the \: question \\ 4 \times side = 72cm \\ transposing \: 4 \: to \: other \: side \\ side = 72 \div 4 = 18 \\ we \: know \: that \: area \: of \: square = \\ {side}^{2} or \: side \times side \\ \\ also \: side = 18cm \\ then \: area \: of \: square = \\ {18}^{2} or \: 18 \times 18 = 324$