Question

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Answer 1

Answer:

Dimensions of the cuboid are 30cm,25cm,15cm

Now area of cuboid =2[lb+bh+hl]

2[30×25+25×15+15×30]

2[750+375+450]

2[1575]=3150

Step-by-step explanation:

To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Answer 2

Given :-

• Length of cuboid = 30 cm

• Breadth of cuboid = 25 cm

• Height of cuboid = 150 cm

To Find :-

• Total surface area of cuboid

Formulae Used :-

$\red{ \boxed{ \sf{total \: surface \: area \: of \: cuboid \: = \: 2(lb \: + \: bh \: + \: lh)}}}$

Solution :-

$\ \: { \sf{length \: of \: cuboid \: = \: 30 \: cm}} \\ \\ \ \: { \sf{ breadth \: of \: cuboid \: = \: 25 \: cm}} \\ \\ \ \: { \sf{height \: of \: cuboid \: = \: 150 \: cm}} \\ \\ \ \: { \sf{tsa \: of \: cuboid = 2(30 \times 25 + 25 \times 150 + 30 \times 150)}} \\ \\ \ \: { \sf{ \implies \: 2(750 {cm}^{2} + 3750 {cm}^{2} + 4500 {cm}^{2} )}} \\ \\ \ \: { \sf{ \implies \: 2(9000 {cm}^{2} )}} \\ \\ \ \: { \sf{ \implies \: 18000 \: {cm}^{2} }} \\ \\ \pink{ \sf{total \: surface \: area \: of \: cuboid = 18000 {cm}^{2} }}$