help quick!!!!!!!!!!!!!?

1 ⤊

1.surface area of a rectangular prism, hight:7in, width :11in.,length:15in

2007-05-27 13:58:57 · 4 answers · asked by Chelsea 1 in Science & Mathematics ➔ Mathematics

SA=2*l*w+2*l*h+2*w*h
l=length
w=width
h=height
Now just plug in the numbers

2007-05-27 14:03:08 · answer #1 · answered by jkicker 3 · 0⤊ 0⤋

A=2(l+w)h+2lw
=2(15+11)7+2(15)11
=694 square inches

2007-05-27 14:45:10 · answer #2 · answered by ? 5 · 0⤊ 0⤋

SA = 2.[ (15 x 7) + (7 x 11) + (15 x 11) ] inÂ²
SA = 694 inÂ²

2007-05-27 20:19:52 · answer #3 · answered by Como 7 · 0⤊ 0⤋

SA = 2(Lw+Lh+Wh)
= 2(15*11 + 15*7 + 11*7)
= 2(165 + 105 + 77)
= 2(347)
= 694in^2

2007-05-27 14:48:35 · answer #4 · answered by wormhole 3 · 1⤊ 0⤋