Question

The ratio between the length and width of a rectangular sheet of paper is 7 : 5.If the width of the sheet is 20.5 cm, find the length.​

Answer 1

Answer:

28 . 7 cm

Step-by-step explanation:

Let the length of the sheet be x

Then the ratio length to width is x:20.5 cm

According to given statement,

x:20.5 cm=7:5

Using cross product rule.

Product of extremes =Product of means

x×5=20.5 cm×7

x×5=143.5 cm

x=28.7 cm

Hence, length of the sheet =28.7 cm

Answer 2

• let the length of sheer = x
• width of rectangular sheet of paper =7:5
• width of the sheet =20.5cm
• according to the statement
• x:20.5cm=7:5
• using cross product rule.
• x×5=20.5×7
• 5x = 143.5
• x=143.5÷5
• x=28.7

Hence ,

• Length of the sheet= 28.7 cm Answer