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2 years ago

01-1-

Mathematics

1 answer:

klio [65]2 years ago

7 0

Answer:

Step-by-step explanation:

50 dollars = ∉34

∉1 = Rs 150

Rs 382800 / 150 Rs per ∉ = 382800/150 ∉

=2552 ∉

50 dollars = ∉34 so 50/34 dollars = ∉

2552 ∉ × 50/34 dollar per ∉ = in the units the ∉ cancel out

∉ × dollar/∉ = dollars

(2552 × 50) / 34 = 3752.94 dollars <------------------

Here is another way of looking at the answer...........

Rs 382800 × 1∉/150 Rs × 50 dollars/34 ∉ = note how the units cancel

= 382800 × (1/150) × (50/34) Rs × ∉/Rs × dollars/∉

= 3,752.94 dollars leaving only dollars in the numerator

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Answer:

The area of circle with radius half of original circle is 7 π cm² .

Step-by-step explanation:

Given as :

The Area of original circle = 28 π square centimeter

Let The radius of original circle = R

Let The area of circle with radius half of original circle = A square centimeters

Let The radius of circle with radius half of original circle = R'

Now, According to question

∵ Area of original circle = π × radius²

So, 28 π cm² = π × R²

Or, R² = $\frac{28\times \Pi }{\Pi }$

Or, R² = 28 cm²

∴ R = $\sqrt{28}$ cm

i.e R = 2 $\sqrt{7}$ cm

So, The radius of original circle = R = 2 $\sqrt{7}$ cm

<u>Again</u>

∵ The radius of circle with radius half of original circle = R'

So, R' = $\dfrac{R}{2}$

i.e R' = $\frac{2\sqrt{7}}{2}$

∴ R' = $\sqrt{7}$ cm

So, The area of circle with radius half of original circle = π × R'²

i.e A = π × R'²

Or, A = π ×( $\sqrt{7}$ ) ²

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So, The area of circle with radius half of original circle = 7 π cm²

Hence The area of circle with radius half of original circle is 7 π cm² . Answer

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