Question

Ratio of length of Rectangle to its breadth
is 7:3 & the perimeter is 80 cm. find length and breadth​

Answer 1

Answer:

LET LENGTH BE 7X AND BREADTH 3X

PERIMETER = 2 ( L + B)

80 = 2 ( 7X + 3X )

80 = 2 × 10X

80 = 20X

X = 80/20 = 4

LENGTH = 4 × 7 = 28 cm

BREADTH = 4 × 3 = 12 cm

hope it helps...

Answer 2

The correct answer is length = 28 cm and breadth = 12 cm.

Given: Ratio of length and breadth = 7:3.

Perimeter = 80 cm.

To Find: Length and breadth.

Solution:

Ratio of length and breadth = 7:3.

Let the length = 7x

Let the breadth = 3x

Perimeter = 2(l + b)

80 = 2(l + b)

80 = 2(7x + 3x)

40 = 10x

x = 4

Length = 7x = 7 x 4 = 28 cm.

Breadth = 3x = 3 x 4 = 12 cm

Hence, the length = 28 cm and breadth = 12 cm.

#SPJ2