Question

What is the surface area of the jewlery box below ?

( click on the image for the full box )
A. 146 cm
B. 292 cm
C. 336 cm
D. 672 cm

Answer 1

B 292

Explanation:

Hello There!

The first thing we want to do is find the formula for surface area of a rectangle

`SA=2(wl+hl+hw)`

where w = width h = height and l = length

we are given the dimension:

h = 7

w = 8

l = 6

all we have to do is plug in

`SA=2(8*7+6*7+6*8)\\8*7=56\\6*7=42\\6*8=48\\48+42+56=146\\146*2=292\\SA=292`

so we can conclude that the surface area is 292