Question

(1)
2. The lid of a rectangular box of sides 40 cm by 10 cm is sealed all round with tape.
What is the length of the tape required?
​

Answer 1

Answer:100cm

Explanation:all around it refers to perimeter

Which is 2(l+b)

Answer 2

Answer:

100 cm

Explanation:

We know that,

Length of lid = 40cm

Breadth of lid = 10cm

We have to find length of tape around i.e, perimeter of lid

Perimeter of rectangle = 2(l+b)

=2(40+10)

=2(50)

=100cm(Ans)