Question

U have to make chart of properties of solid , liquid or gas. (Any one) as a project which contains 10 marks. U can use colored paper, project paper, chart paper.. ur wish. Make it and send it to me.

Answer 1

Answer:

Hey dude

Explanation:

Thanks for free points

Answer 2

AnswEr :
The radius of a wheel = 21 cm
Explanation :
We are given with the circumference of a wheel, that is,

Circumference of wheel = 132 cm.
We have to find out the radius of a wheel.

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Now,

Let us assume that, the radius of a wheel is x cm.

Diagram :



As we are given with circumference of a wheel. We know that wheel is always is in the form of circle.

We know that, if we are given with circumference of circle we have the required formula, that is,

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→ Circumference of circle = 2πr.

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Substituting the given values in the formula,

⇒ 132 = 2 × 22/7 × x

⇒ 132 × 7 = 2 × 22 × x

⇒ 924 = 2 × 22 × x

⇒ 924 = 44 × x

⇒ 924 = 44x

⇒ 924 - 44x = 0

⇒ -44x = 0 - 924

⇒ -44x = -924

⇒ 44x = 924

⇒ x = 924/44

⇒ x = 21

Hence, the radius of a wheel is 21 cm.

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Verification :
⇒ Circumference of circle = 2πr

⇒ 132 = 2 × 22/7 × 21

⇒ 132 = 2 × 22 × 3

⇒ 132 = 44 × 3

⇒ 132 = 132

Clearly, LHS = RHS

Here both the conditions satisfy, so our answer is correct..

Hence Verified !