The volume of a cuboid with squared base of side length 20 cm and its hight 10 cm =litreshelp???​

Actually Welcome to the Concept of the Volumes.

Volume of cuboid= L*B*H

here, L=B=20cm and H=10cm

hence , we get as,

Volume = 20*20*10 => Volume = 4000 cubic cm.

hence the volume is ===> 4000 cm^3.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

47 - 90 = 43

43 - 180 = x

x = 137