36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is
a. 12 units
b. 26 units
c. 24 units
d. 36 units

Solution:

It is given that

Area of rectangle = 36 unit squares

We know that

36 = 6 × 6

It can be written as

36 = 2 × 3 × 2 × 3

So we get

36 = 2² × 3²

36 = 4 × 9

Here the sides of a rectangle are 4 cm and 9 cm

Perimeter = 2(l + b)

Substituting the values

= 2(4 + 9)

= 2(13)

= 26 units

Therefore, the perimeter of the rectangle is 26 units.

✦ Try This: 64 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 11

NCERT Exemplar Class 7 Maths Chapter 9 Problem 3

36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is a. 12 units, b. 26 units, c. 24 units, d. 36 units

Summary:

36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is 26 units.

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