Question

solve the question (Please help me)​

Answer 1

${\huge{\textbf{\textsf{{\color{navy}{♡ Sol}}{\purple{uti}}{\pink{ons ♡}}}}}}$

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❶. Appropriate Question :

If the Length and Breadth of a Rectangle are Doubled, How many times the Perimeter of the Old Rectangle will that of the New Rectangle be?

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♛ Solution :

★ Given :

The Length and Breadth of a Rectangle are Doubled.

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★ To Find :

How many times the Perimeter of the Old Rectangle will that of the New Rectangle be?

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★ Used Formula :

$\large\bf \red⇝ \: Perimeter \: _{(Rectangle)} = 2 (l+b)$

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★ Step-by-step Explanation :

Here,

☛ Old rectangle,

• Length = l
• Breadth = b
• Perimeter = 2 (l+b)

Now,

The length and the breadth of the rectangle are doubled.

Then,

☛ New rectangle,

• Length = 2l
• Breadth = 2b

∴ Perimeter = 2 (l+b)

$\bf ⟹ \: 2 \: (2l+2b)$

$\bf ⟹ \: 2 × 2 \: (l+b)$

$\bf ⟹ \: 2 × Old \: rectangle$

${ \large \red{⟹ \: \underline{\boxed {\textbf{\textsf{{ \red{Old \: rectangle \: = \: 2 \: (l+b)}}}}}}}}$

Hence,

❝ The perimeter of the new rectangle will become two times the perimeter of the old rectangle.❞

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❷. Appropriate Question :

If the Circumference of the Circle is 176cm. Find its Radius and Diameter ?

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♛ Solution :

★ Given :

The circumference of circle is 176cm

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★ To Find :

Radius and Diameter of a circle ?

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★ Used Formula :

$\large \bf \red⇝ \: Circumference = 2 \pi r$

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★ Step-by-step Explanation :

Here,

The circumference of a circle is 176cm

We know that,

$\large \bf ⟹ \: Circumference = 2 \pi r$

Where,

• r = Radius

Now,

$\bf ⟹ \: 176cm= 2 \pi r$

$\displaystyle\bf ⟹ \: 176cm= 2 \times \frac{22}{7} \times r$

$\displaystyle\bf ⟹ \: 176cm= \frac{44}{7} \times r$

$\displaystyle\bf ⟹ \: 176 \times 7= 44 \times r$

$\displaystyle \bf ⟹ \: 1232= 44 \times r$

$\displaystyle\bf ⟹ \: \cancel\frac{1232}{44} \: 28= r$

${ \large \red{⟹ \: \underline{\boxed {\textbf{\textsf{{ \red{r \: = 28}}}}}}}}$

∴ Radius = 28cm

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We know that,

$\bf \red⇝ \: Diameter = 2 × Radius$

$\bf ⟹ \: Diameter = 2 × Radius$

$\bf ⟹ \: Diameter = 2 × 28$

${ \large \red{⟹ \: \underline{\boxed {\textbf{\textsf{{ \red{Diameter = 56cm}}}}}}}}$

∴ Diameter = 56cm

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Hence,

❝The Radius and Diameter of the circle is 28cm and 56 cm❞

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# Thank you ❣️

Answer 2

Step-by-step explanation:

Hence,

Hence,❝The Radius and Diameter of the circle is 28cm and 56 cm❞