Question

If the radius of a circle increases by 6%,what is the percentage increase in its area and circumference

Answer 1

Solution :

Given that, a = 6

According to the formula,

Percentage increase in area

$= > (2a + \frac{ {a}^{2} }{100} )$

$= > (2 \times 6 + \frac{86}{100} )$

= (12 + 0.36)%

=12.36%

☆Extra Brainly Knowledge ☆

Radius - a straight line from the centre to the circumference of a circle is known as radius .

Circumference - In simple Language , the circumference is the perimeter of a circle

Answer 2

$\huge\underline\mathrm{Question:-}$

• To find percentage increase in it's area & circumference.

$\huge\underline\mathrm{Given:-}$

• $a = 6$

$\huge\underline\mathrm{Answer:-}$

percentage increase in area formula -

$\huge{\fbox{\fbox{\star{\mathscr{\purple{2a^2/100}}}}}}$

Putting Values -

• ( 2 times 6 + 86/100 )
• ( 12 + 0.36 ) %
• 12.36 %