Question

ratio of lenth and width of rectangle is 7:3 .area of rectangle is 8400 cm find the lenth​

Answer 1

Answer:

hi mate here is your answer please mark as brainliest

Answer 2

Answer:

140 cm

Step-by-step explanation:

ar of rec = length * breath

8400 = 7k * 3k ( let length and width be 7k and 3k resp)

k² = 8400 / 21

k = 20

so

lenght = 7k

= 7*20

=140 cm

[and yes the ar will be in cm² (question mistake) ]