Question

Estimate what part of the figures is coloured and hence find the per cent which is coloured.​

Answer 1

Answer:

25%

Step-by-step explanation:

because the circle is hundred percent then we divide hundred into 4 the answer is 25 as we see 1/4 part of a circle is coloured show the answer of 25% .

hope it helped you.

Answer 2

${\huge{\sf{\red{\underline{ANSWER}}}}}</p><p>$

• To see this figure we get that one forth of the circle is coloured with blue.

$\underline\red{\bold{✓FORMULA}}$

• Percent =

$\frac{area \: of \: coloured \: part}{area \: of \: circle} \times 100$

$\underline\red{\bold{✓SOLUTION}}$

• The area of coloured part =

$\frac{1}{4} \times area \: of \: circle \\ \: \implies \: \frac{1}{4} \times \pi {r}^{2}$

The area of circle =

$\pi {r}^{2}$

where,

r = radius of circle

Now percent =

$\frac{ \frac{1}{4} \times \cancel\pi \cancel{r}^{2} }{\cancel\pi \cancel{r}^{2} } \times 100 \\ \implies \frac{1}{\cancel4} \times \cancel1\cancel0\cancel0 = 25$

The percentage of coloured part = 25%