Question

Find the surface area of the rectangular prism above using its net below

Answer 1

Answer:

82cm²

See explanation below

Step-by-step explanation:

The question is incomplete without the diagram of the rectangular prism and it's dimensions. We are to determine the surface area of the rectangular prism using it's net.

I would show you how to determine it using diagram below.

Find attached the diagram used in solving the question as well as the net obtained from the diagram.

Solution:

A net diagram is a 2-dimensional representation of a 3-dimensional solid in which case the solid is unfolded.

The net gives the total area of the sides and faces of the 3 dimensional figure.

The units of the diagram used are all in cm.

Using net diagram:

Area A = Area B = length × height = hl

Area C = Area D = width × length= wl

Area E = Area of F = height × width = hw

surface area of the rectangular prism = 2(wl + hl + hw)

w = width = 2cm

l= length = 7cm

h = height = 3cm

Insert the values in the formular

A = 2(2×7 + 3×7 + 2×3)

A = 2(14+21+6)

A = 2(41) = 82cm²

Surface area of the rectangular prism = 82cm²