89.5k views
2 votes
Can you help me figure out how to do this

Can you help me figure out how to do this-example-1
User Adib
by
7.0k points

1 Answer

6 votes

Answer

There are 3 pairs of rectangular faces on this figure.

Total surface area = 276 cm²

Step-by-step explanation

A cuboid or a rectangular prism has 3 pairs of rectangular faces.

Hence, the surface area is given as

Total surface area = 2 (LB + LH + BH)

where

L = Length of the cuboid = 7 cm

B = Breadth of the cuboid = 4cm

H = Height of the cuboid = 10 cm

Total surface area = 2 (LB + LH + BH)

Total surface area = 2 [(7×4) + (7×10) + (4×10)]

Total surface area = 2 [28 + 70 + 40]

Total surface area = 2 (138) = 276 cm²

Hope this Helps!!!

User ZhangTengyuan
by
6.6k points