Question

The length and breath of a rectangle are 5 3/4 cm and 2 7/8cm respectively. find its perimeter.​

Answer 1

Answer:

Length= 5 3/4 cm , Breadth= 2 7/8 cm

Step-by-step explanation:

Perimeter is 69/4.

Formula of Perimeter of a rectangle: 2×(l+b)

5 3/4= 23/4 and 2 7/8 = 23/8

=2×(23/4+23/8)

=2×(46+23/8)

=2×69/8

=69/4

Answer 2

Length

$5 \frac{3}{4}$

Breadth

$2 \frac{7}{8}$

firstly we convert it into improper fraction

$5 \frac{3}{4} = \frac{23}{4} \\2 \frac{7}{8} = \frac{23}{8}$

the perimeter of a rectangle = 2(l+b)

$= 2 (\frac{23}{4} + \frac{23}{8})$

the lcm of 4 and 8 is 8

so,

$= 2( \frac{46}{8} + \frac{23}{8}) \\ = 2( \frac{89}{8}) \\ = \frac{2}{1}( \frac{89}{8}) \\ = \frac{89}{4}$

$\red {hence \: the \: answer \: is \: \frac{89}{4}.}$