Question

if the length of a rectangle is 7 by 5 of his breath and the perimeter is 48 cm find its length

Answer 1

2(l+b)=48cm

l+b=24

(7b/5)+b=24

12b/5=24

b=10

so length=7/5×10

=14cm

Answer 2

mark brainliesttttt plzzzzzz.

Given that length of the rectangle is 7/5 of its breadth.

So Let the breadth (B) of rectangle be x

Then, Length of rectangle (L) = 7/5 × x

length = 7/5x

Given Perimeter = 48 cm

So, As we know that

Perimeter of rectangle = 2(L + B)

Therefore,(see pic)

So x = 12

Therefore, breadth = 12 cm

and Length = 7/5 × 12 = 16.8cm