Question

5. The area of square is 100 cm2
Its side is
(a) 20 cm (b) 30 cm (c) 10 cm (d) none of these​

Answer 1

Answer:

c) 10 cm

Step-by-step explanation:

Area of square = side^2

100=x^2

$\sqrt{100 } = 10$

Answer 2

Given

• Area of the square is 100cm².

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To find

• Measure of its side.

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Solution

• In this question, area of square has been used.

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$\: \: \: \: \: \: \: \: \: \:\underline{\sf{\red{As\: we\: know}}}$

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$\star{\boxed{\boxed{\bf{Area_{(Square)} = (side)^2}}}}$

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$\tt:\implies\: \: \: \: \: \: \: \: {Area = 100}$

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$\tt:\implies\: \: \: \: \: \: \: \: {(side)^2 = 100}$

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$\tt:\implies\: \: \: \: \: \: \: \: {side = \sqrt{100}}$

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$\tt:\implies\: \: \: \: \: \: \: \: {side = 10\: cm}$

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Hence,

• Option (c) is the correct option.

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⠀⠀⠀⠀⠀⠀⠀Some Formulae

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→ Area of square = (side)²

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→ Area of rectangle = length × breadth

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→ Area of triangle = ½ × base × height

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→ Area of parallelogram = base × height

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→ Area of Circle = πr²