Question

The circumference of a circle is 44 cm. (i) By how
much should the radius be increased to make the
circumference 22 cm longer? (ii) Calculate the area
of the larger circle.​

Answer 1

Answer:

Step-by-step explanation:

Means 44+22=66 CM

66=2X22/7 X r

66X7 =2X22Xr

462 =44 r

462/44=10•5 is the r

And she 44 is circumference

44X7=2X22Xr

308=44r

308/44=7 is the r

So, how much r is increased =10•5-7

=3•5 ans

Plzzzzz mark it the BRAINIEST answer of this question

Oh sorry are of the larger circle =66 circumference wala ok

Area=22/7 X r²

A=22/7 X 10•5 X 10•5

A=answer ayega 346•5

Plzzzzz mark it the BRAINIEST answer of this question

Answer 2

The correct answer is the new radius is 10.5 cm and larger area is 346.5 $cm^{2}$.

Given: Circumference = 44 cm.

To Find: Radius and area of circle.

Solution:

Circumference = 44 cm.

$2\pi r=44$

$2*\frac{22}{7} *r=44$

r = 7 cm

i) Circumference is increased by 22 cm.

Final circumference  44 + 22 = 66 cm

$2\pi r=66\\ 2*\frac{22}{7}*r=66\\ r = 10.5 cm$

ii) Area of larger circle = $\pi r^{2}$

= $\frac{22}{7}*(10.5)^{2}$

= 346.5 $cm^{2}$.

Hence, the new radius is 10.5 cm and larger area is 346.5 $cm^{2}$.

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