L=3cm w=1cm h=3cm what is the volume and surface

v=9 cm³

sa=30 cm²

Step-by-step explanation:

v=3*3*1=9cm³

sa=(2*3*3)+(4*3*1)=18+12=30 cm²

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

5

step-by-step explanation: