Question

unit-
Ratio
are in the
he
Activity. I
noctangle
The
breadth and bogth of a
natio 4:5 and its anea
is 320er, What are
breadth
and length?​

Answer 1

Answer:

let the ratio of length and breadth be 4x and 5x

given area of the rectangle=320cm

therefore,

4x × 5x = 320cm

or, 20x to the power 2 = 320cm

or, x to the power 2 = (320 ÷ 20)cm

or,x =√16cm

or, x = 4cm

A/q,

length of the rectangle = 4x = 4×x

= (4×4)cm = 16cm

breadth of the rectangle=5x = 5×x

= (5×4)cm = 20cm

this is your answer

Answer 2

Answer:

20 cm

Step-by-step explanation:

let the ratio of length and breadth be 4x and 5x

given area of the rectangle=320cm

therefore,

4x × 5x = 320cm

or, 20x to the power 2 = 320cm

or, x to the power 2 = (320 ÷ 20)cm

or,x =√16cm

or, x = 4cm

A/q,

length of the rectangle = 4x = 4×x

= (4×4)cm = 16cm

breadth of the rectangle=5x = 5×x

= (5×4)cm = 20cm