# Essential Mathematics 2

posted by .

Find the surface area of the closed rectangular box shown

6cm, 5cm, 3cm
S.A.= (LW)+2(HL)+2(HW)

I did: (5x6)+2(5x3)+2(6x3)=96 am I correct?

• Essential Mathematics 2 -

6cm, 5cm, 3cm
This formula for the surface area is for an open box with length L and width W:
S.A.(open)= (LW)+2(HL)+2(HW)

For a closed box, it would be:
S.A.(closed)= 2(LW+HL+HW)

You would do: 2(5x6)+2(5x3)+2(6x3)=?

• Essential Mathematics 2 -

126. thanks

• Essential Mathematics 2 :) -

You're welcome!

## Similar Questions

1. ### Math

If a rectangular box has A width of 2cm, a length of 3cm, and a height of 5cm, what is the surface area?
2. ### math

Suppose a rectangular box with 3cm height, 2cm width, and 5cm length was resting on a different face. How would this affect its surface area?
3. ### geometry

calculate the area, surface area, and volume for a right rectangular prism with a length 2cm, height 5cm, and width 3cm
4. ### math

what is the surface area of a rectangular prism with the width 4cm lenth 5cm height of 3cm
5. ### algebra

true or false?The surface area of an open rectangular box is the same as the surface area of a closed rectangular box.
6. ### math

The length of an open-top box is 4 cm longer than its width. The box was made from a 480-cm^2 rectangular sheet of material with 6cm by 6cm squares cut from each corner. The height of the box is 6cm. Find the dimensions of the box. …
7. ### geometry

a closed box of uniform thickness is made of wood 1cm thick. Its extenal dimensions are 6cm and 5 cm by 4 cm. Find the a. volume of the wood used in making the box. b. the capacity of the box, given that the cover is full length and …