Question

6 mm
5 mm
13 mm
SA=
Rectangular Prisim

Answer 1

346mm^2

Explanation:

the formula to find the surface area of a rectangular prism is S.A.=2(l*w+l*h+w*h)

l is length

w is width

h is height

so, 2(13*6+13*5+6*5)

=346mm^2

Answer 2

346 mm²

Explanation:

Surface area of rectangular prism:

l = length = 6 mm

w = width = 5 mm

h = depth = 13 mm

`\boxed{\text{\bf Surface area of rectangular prism =2*(lw+wh+hl)}}`

`\sf = 2 *( 6*5 +5*13 +13*6)\\\\= 2* (30 + 65 + 78)\\\\= 2 * 173\\\\= 346 \ mm^2`