Question

5.Each side of a square flower bed is 2 m 40 cm long. It is
extended by making a border 15 cm wide all around it.
Find the area of the border.

Answer 1.53m²​

Answer 1

Answer:

The area of the border will be 1.53 m²

Step-by-step explanation:

original size of each side of the bed = 2 m 40 cm = 2.4 m

=> original area = a² = 2.4² = 5.76 m²

since it is extended by adding a border of 15 cm on each side, hence net increase in the side = 15 + 15 = 30 cm = 0.3 m

hence

new side = 2.4 + 0.3 = 2.7 m

so the new increased area = 2.7² = 7.29 m²

Hence the area of the border = increased area - original area

= 7.29 - 5.76

= 1.53 m²

Hence the area of the border will be 1.53 m²