Work out the surface area of the solid cuboid
L=5cm
W=2cm
H=5.3cm

A = 94.2 cm²

Step-by-step explanation:

Given that,

Length, l = 5 cm

Width, b = 2 cm

Height, h = 5.3 cm

We need to find the surface area of the solid cuboid.

The formula for the surface area of the sold cubiod is given by :

A = 2(lb+bh+hl)

Substitute the values in the above formu;a

A = 2(5(2)+2(5.3)+(5.3)(5))

= 2(10+10.6+26.5)

= 2(47.1)

= 94.2 cm²

Hence, the required surface area is 94.2 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.

the forst and 3rd

step-by-step explanation: