Question

find the area of a circle with diameter 28 cm
take π as 22÷7​

Answer 1

Answer:

diameter =28 cm

radius =28/2cm=14cm

area if a circle is π.radius^2

=22/7.14^2sq cm

=22×14×14/7sq cm

=616 sq cm

Answer 2

Answer:

$\huge\underline\mathfrak\blue{Answer}$

$area \: of \: circle = \pi \: r {}^{2}$

$to \: find \: area \: of \: circle \: we \: should \: to \: know \: what \: is \: radius$

$let^s \: find \: radius$

$= radius = \frac{28}{2}$

$= radius = 14$

now find the area of circle:-

area of circle= πr²

$= \frac{22}{7} \times 14 \times 14$

$= 22 \times 2 \times 14$

$= 44 \times 14$

$= 616cm {}^{2}$

hence area of circle is 616cm²