Question

PLZ i need anwse ASAP

Answer 1

Surface area is the sum of area of all the faces .

In the net diagram, we have 6 faces. So we have to find the area of each face and add them to find the surface area .

And since each face is rectangle in shape, so we will use the formula of area of rectangle, which is

$Area= length*width$

So the required surface area is

$A = (11*5)+(11*4)+(11*5) +(11*4)+(5*4)+(5*4) \\A = 55+44+55+44+20+20 =238 mm^2$

And that's the required surface area of the rectangular prism .