How many meters of border will be needed for a rectangular poster 8 3/10 meters wide and 7 2/5 meters long

meters of border required =  31.4 meter

Step-by-step explanation:

width/breadth of rectangular poster = 8 3/10 =  83/10 meters

length of rectangular poster =  7 2/5 =  37/5 meters

meters for border for the rectangular poster = perimeter of the poster

                                                       = 2 ( L+b)

                                                      = 2 ( 37/5 + 83/10 )      

LCM = 10

= 2 ( 74/10 + 83/10 )

= 2 X 157/10

= 31.4 meter

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

c

step-by-step explanation: