Question

(b) Area = 1250 sq cm and breadth = 100 cm. find the length
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Answer 1

Answer:

Area of rectangle = Length × Breadth

ATQ,

1250cm² = 100×x

x = 1250/100

x = 12.5cm

Hence,The length is 12.5cm

Step-by-step explanation:

Hope it Helps uh✌

Answer 2

$\huge\sf{\underline{To \: Find}}:$

• The length.

$\large\bf{\underline{Given}} \: –$

• Area = 1250 cm²
• Breadth = 100 cm

Formula to be used –

$\large\orange{\fbox\pink{\tt{Area\:of\:a\:rectangle\:=\:(l×b)}}}$

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$\huge\bold{\underline{\underline{Solution}}}:$

As per the dimensions, most probably the given figure is a 'rectangle'.

→ let the length be x cm.

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So, acc. to the formula for finding the area of a rectangle, breath =

$\sf{Area = length×breadth} \\ \implies\sf{1250 = (x × 100)} \\ \implies \sf{1250 = 100x} \\ \implies \sf{x = \frac{ { \huge\not}1250}{ { \huge\not}100} } \\ \implies \green{\boxed{ \sf{x = 12.5}}}$

∴ The length of this rectangle is 12.5cm.

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$\large\sf{\bold\green{\underline{Verification}}}✓$

$\sf{Area = length × breath} \\ \implies \sf{Area = 12.5 × 100} \\ \implies \sf{Area = 1250 cm²} \\ \\ \bold{\underline{Hence\:verified}}!$

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✍️Relatable Formulae :

♦ Area of a rectangle =

• length × breath

♦ Perimeter of a rectangle =

• 2(length+breath)

♦ Diagonal of a rectangle =

• √l² + √b²

♦ Area of a square =

• side²

♦ Perimeter of a square =

• 4 × side

♦ Diagonal of a square =

• √2a

♦ Area of a cube =

• side × side × side

♦ Area of a cuboid =

• 2(lb + bh + hl)

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⠀⠀⠀✨HOPE IT HELPS✨