Question

the breadth and perimeter of a rectangle are 8cm and 64 cm find . the length of the rectangle for 5th class

Answer 1

Answer:

24

Step-by-step explanation:

p=2(l+b)

64=2(l+8)

32=l+8

l=24

Answer 2

Answer:

The breadth and perimeter of a rectangle are 8cm and 64 cm, the length of the rectangle is $l=24cm$

Step-by-step explanation:

A rectangle is a polygon with four sides as shown in the figure

The perimeter of a rectangle is the total linear distance along its boundary

for a rectangle with the length $l$ and breadth, $b$ the perimeter is given by the formula

$P=2l+2b$ (equation 1)

From the question, it is given that

the breadth of the rectangle is $b=8cm$

the perimeter is $P=64cm$

to get the length of the rectangle substitute the given values in equation 1

$2l+2*8=64\\2l=64-16=48\\l=48/2=24cm$

so the length of the given rectangle is $l=24cm$