Question

Surface area of a rectangular prism? Dimensions Length: 3 Width: 4 Height: 5

Answer 1

Answer:

94

Step-by-step explanation:

Surface area of a rectangular prism = 2(lw + wh + lh)

where l = lenght, w = width and h = height

here we are given that the rectangular prism has a lenght of 3, a width of 4 and a height of 5.

So we have SA = 2(lw + wh + lh)

==> plug in l = 3, w = 4 and h = 5

SA = 2((3)(4) + (4)(5) + (3)(5))

==> find products of numbers that are next to each other seperated by parenthesis

SA = 2(12 + 20 + 15)

==> find sum of values in parenthesis

SA = 2(47)

==> multiply 2 and 47

SA = 94

Answer 2

Answer:

Surface area = 94

Step-by-step explanation:

║Formula for {Area of  a Rectangular Prism} ║:

2(lw + wh + lh)

Which can also express as:

2(Lw) + 2(Wh) + 2(Lh)

While,

L = Length

W = Width

H = Height

║ Given ║ :

Length: 3

Width: 4

Height: 5

║Solve ║:

2( 3 × 4) + 2(4  × 5) + 2(3  × 5)

(6  × 4 )+ (8  × 5) +( 6  × 5)

24 + 40 + 30

64 + 30

94

Hence, the surface area of a rectangular prism is:

94

Kavinsky