Question

4.
Shown below is solid cuboid.
3cm
2cm
9cm
Work out the total surface area of the cuboid.​

Answer 1

Answer:

TSA=102cm

Step-by-step explanation:

$tsa = 2(lb + bh + lh )\\ = 2(9 \times 2 + 2 \times 3 + 9 \times 3) \\ = 2(18 + 6 + 27 )\\ =2 \times 51 = 102cm$

Answer 2

Answer:

The answer is in the picture.

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