Question

The perimeter of a rectangular greeting card is 46 cm and its breadth is 10 cm find its length

Answer 1

Perimeter=2(l+b)

46cm=2(l+10cm)

46cm=2l+20cm

2l=46cm-20cm

2l=26cm

l=13cm

therefore,

length is 13cm

Answer 2

Answer:

Perimeter = 2( l+ b)

46= 2(l+ 10)

46÷2=l+ 10

23= l+10

l= 13 cm