Mensuration class 6

In a rectangle

length = 40 cm

Breadth =10 cm

What is the perimeter of the rectangle ?

• 10

• 100

• 1000

• 10000

Answer explanation

perimeter of rectangle

= (l + b) x 2

= (40cm + 10cm) x 2

= 50cm x 2

= 100cm

Perimeter of a rectangle =

• (L x 2) + b

• (b x 2) + l

• 2 + (l x b)

• 2 x (l + b)

Opposite sides of a rectangle are equal

So AB = CD

AD = ?

• AC

• AC

• DA

• BC

Answer explanation

line segmant AB is parellel to CD, so line segmant AD is parellel to BC

find area and perimeter of the rectangle given in the image

• area = 12 m. square

  perimeter = 14 m

• area = 12 m

  perimeter = 14m. square

• area = 14m

  perimeter = 12m. square

• area = 14 m. square

  perimeter = 12m

Answer explanation

area of rectangle

= l x b

= 4m x 3m

= 12 m. square

perimeter of rectangle

= (l + b) x 2

= (3m + 4m) x 2

= 7m x 2

= 14m