Question

If the length of a brick is 22.5cm, breadth is 10cm and height is 7.5cm,then surface area of brick is.. ​

Answer 1

Answer:

formula = l multiple b multiple h.

22.5×10×7.5 =1687.5

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Answer 2

Answer:

Given :-

• The length of a brick is 22.5 cm, breadth is 10 cm and height is 7.5 cm.

To Find :-

• What is the surface area of brick ?

Solution :-

Given :

• Length of Brick = 22.5 cm
• Breadth of Brick = 10 cm
• Height of Brick = 7.5 cm

According to the question by using the formula we get,

$\small \implies \sf\boxed{\bold{Surface\: Area_{(Cuboid)} =\: 2(lb + bh + hl)}}$

where,

• l = Length
• b = Breadth
• h = Height

So, the surface area of brick is :

$\small \implies \sf Surface\: Area_{(Brick)} =\: 2\bigg\{(22.5 \times 10) + (10 \times 7.5) + (7.5 \times 22.5)\bigg\}$

$\small \implies \sf Surface\: Area_{(Brick)} =\: 2\bigg\{(225 + 75 + 168.75)\bigg\}$

$\small \implies \sf Surface\: Area_{(Brick)} =\: 2(468.75)$

$\small \implies \sf Surface\: Area_{(Brick)} =\: 2 \times 468.75$

$\small \implies \sf\bold{\underline{Surface\: Area_{(Brick)} =\: 937.50\: cm^2}}$

$\therefore$ The surface area of brick is 937.50 cm² .