Question

Siti bent a piece of wire 2.1 m long into a rectangle. the breath of the rectangle is 45 cm long. What is the length of the rectangle in cm(please show working)

Answer 1

Step-by-step explanation:

Siti bend a wire into rectangle whose length is 2.1 m

that means the perimeter of a rectangle is 2.1m

The breadth of rectangle = 45 cm

perimeter = 2.1 m

convert into cm

2.1 * 100= 210 cm

Formula of perimeter of rectangle = 2 ( l+b )

210= 2 ( l+ 45)

210 /2 = l+45

105 = l + 45

105 - 45 = l

60 = l

So the length is 60 cm