Question

ELO
c) Neha decided to put up a soft board in her classroom. The length and breadth of the
board are 1 cm and b cm respectively.
(1) She decided to frame the board using a thick ribbon.
If 35 cm extra ribbon was required to frame it
completely, what is the length (in cm) of the ribbon?
(ii) What will be the expenditure for making 50 such boards
if the carpenter charges z per board?
b​

Answer 1

Answer:

(1) Length of board- 1cm width- b

to frame the board we need perimeter = 2(l+b)

= 2(1+b)= 2+2b +35(extra)

= 37+2b cm ribbon needed

(2) Cost of making 50 boards if each board costs z will be 50 z