Answer :

**(a)** We know that,

Area of rectangle = Length × Breadth

Length of rectangle, l = 3 cm

Breadth of rectangle, b = 4 cm

Therefore,

Area of rectangle = Length × Breadth = 3 × 4 = 12 cm^{2}

**(b)** We know that,

Area of rectangle = Length × Breadth

It is given in the question that,

Length of rectangle, l = 12 m

Breadth of rectangle, b = 21 m

Therefore,

Area of rectangle = Length × Breadth = 12 × 21 = 252 m^{2}

**(c)** We know that,

Area of rectangle = Length × Breadth

It is given in the question that,

Length of rectangle, l = 2 km

Breadth of rectangle, b = 3 km

Therefore,

Area of rectangle = Length × Breadth = 2 × 3 = 6 km^{2}

**(d)** We know that,

Area of rectangle = Length × Breadth

It is given in the question that,

Length of rectangle, l = 2 m

Breadth of rectangle, b = 70 cm = 0.70 m

Therefore,

Area of rectangle = Length × Breadth

= 2 × 0.70

= 1.40 m^{2}

Rate this question :

Find the areas ofNCERT - Mathematics

Split the followiNCERT - Mathematics

A floor is 5 m loNCERT - Mathematics

The length and brNCERT - Mathematics

How many tiles whNCERT - Mathematics

Five square floweNCERT - Mathematics

By splitting the NCERT - Mathematics

What is the cost NCERT - Mathematics

Find the areas ofNCERT - Mathematics

Find the areas ofNCERT - Mathematics