Question

L=5cm, b=4.5cm, h=2.5cm. Find the T-S.A of cuboid

TSA=Total surface area

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Answer 1

Step-by-step explanation:

$l = 5cm \\ b = 4.5cm \\ h = 2.5cm \\ using \: tsa \: of \: cube \\ = 2(lb + bh + lh) \\ 2(5 \times 4.5 + 4.5 \times 2.5 + 2.5 \times 5) \\ 2(22.5 + 11.25 + 12.5) \\ 2(46.5) \\ 93cm {}^{2}$

Answer 2

Answer :

• 83.5 cm²

Given :

• Length of Cuboid = 4 cm
• Breadth of Cuboid = 4.5 cm
• Height of Cuboid = 2.5 cm

To find :

• the Total Surface Area of the cuboid.

Solution :

⇒ Let's find the Total Surface Area.

→ Total Surface Area of Cuboid = 2 (lb + bh + hl)

= 2 (4 × 4.5) + (4.5 × 2.5) + (2.5 × 5)

= 2 (18) + (11.25) + (12.5)

= 2 × (18 + 11.25 + 12.5)

= 2 × (41.75)

= 2 × 41.75

= 83.5

• Therefore, the total surface area of cuboid is 83.5 cm².