Question

Janet wants to build a fence around her square garden.her garden has an area of 81 square feet.How much fencing will Janet need?

Answer 1

Area of garden = 81 ft²

Area of square = side²

`\rm \implies side ^(2) = 81 \\ \\ \rm \implies side = √(81) \\ \\ \rm \implies side = \sqrt{ {9}^(2) } \\ \\ \rm \implies side = 9 \: ft`

Perimeter of square = 4 × Side

= 4 × 9

= 36 ft

`\therefore` Fencing needed by Janet = 36 ft