Question

The diameter of two circles are 38cm ans and 18cm find the diameter of the circle whose circumference is equal to the circumference of two circles

Answer 1

Answer:

Step-by-step explanation:

Answer 2

The diameter of the circle whose circumference is equal to the circumference of two circles is 56 cm

Step-by-step explanation:

Diameter of circle 1 = 38 cm

Radius of circle 1 = $\frac{38}{2}=19 cm$

Circumference of circle 1 = $2 \pi r = 2\pi (19)$

Diameter of circle 2 = 18 cm

Radius of circle 2 = $\frac{18}{2}=9 cm$

Circumference of circle 2 = $2 \pi r = 2 \pi (9)$

SO, Circumference of two circle = $2\pi(19)+2 \pi (9)$

We are supposed to find the diameter of the circle whose circumference is equal to the circumference of two circles

So, Let the radius of that circle be R

So,$2\pi R =2 \pi (19)+2 \pi (9)\\R=19+9\\R=28$

Diameter of circle = $28 \times 2 = 56 cm$

Hence the diameter of the circle whose circumference is equal to the circumference of two circles is 56 cm

#Learn more:

Find the circumference of circle whose diameter is 38cm​

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