Question

What is the area of a circular surface if the
radius is 14 cm?​

Answer 1

Step-by-step explanation:

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Answer 2

★★question:

what is the area of a circular surface if the radius is 14cm?

★★solution:

♪ ➪ area = 616cm²

let's find out !!

✍︎✍︎we know that the area of circle is :

$= \geqslant \: a = \pi \: {r}^{2}$

☘︎ so,

$= \geqslant \: a = \frac{22}{7} \times 14 \times 14$

$= \geqslant a = \frac{22}{1} \times 2 \times 14$

$= \geqslant a = 22 \times 2 \times 14$

$= \geqslant a = 616 {cm}^{2}$

>>♪♪✈︎✈︎ hence the area of circle is 616cm².

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✍︎✍︎ releate question:-

★★★ question:

find the area of the semicircle if the diameteris 14cm.

✯✯ AnsWer:-

☞︎︎︎☞︎︎︎==>> 77cm²

let's find out !!

❥︎ given :-

☀︎︎ diameter = 14cm.

♫︎:. find radius = d/2

♫︎:. radius = 14/2

♫︎;. radius = 7cm

so,

$= \geqslant a = \pi {r}^{2}$

$= \geqslant a = \frac{1}{2 } \times \frac{22}{7} \times 7 \times 7$

$= \geqslant a = \frac{1}{2} \times 22 \times 7$

$= \geqslant a = 11 \times 7$

$= \geqslant a = {77}cm^{2}$

hence area of semicircle is 77cm²

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know more :-

• area of square = (sides)²

• area of rectangle = (l×b)

• area of circle = π r

• area of triangle = ½×base × height

• area of parallelogram = height × base

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