Question

How many stamps of size 4cm by4 cm will be needed to cover a rectangle measuring 28cm by 24cm​

Answer 1

Answer:

42 stamps

Step-by-step explanation:

sides of stamp

a=4

b=4

area of stamp= 4×4 = 16cm²

Sides of rectangle

l= 28cm

b= 24cm

area of rectangle = 28×24= 672cm²

stamp required = 672/16 = 42ans.

Answer 2

=》 AREA OF RECTANGLE = LENGTH × BREADTH

= 28 × 24

=672 cm²

=》 AREA OF 1 STAMP = SIDE × SIDE

= 4×4

= 16cm²

NUMBER OF STAMPS REQUIRED = AREA OF RECTANGLE / AREA OF 1 STAMP

SO,

NO. OF STAMPS = 672/16

=42

SO, 42 STAMPS ARE REQUIRED.

HOPE IT HELPS :)