Question

15 per metre.
16. The figure shows two concentric
circles with diameters 30 cm
and 20 cm. Find the area of the
shaded region. [Use = 3.14]
Fig. 15.39​

Answer 1

Step-by-step explanation:

$\huge{\underline{\mathtt{\red{ƛ}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}} :) :)$

$\tt{Area \: of \: shaded \: portion}</p><p></p><p>        \\  =π(r \frac{2}{2} −r \frac{1}{2} )</p><p></p><p>        \\  =3.14((50 {)}^{2} −(40 {)}^{2} )</p><p></p><p>      \\    =3.14×900</p><p></p><p>        \\   \tt \blue{=2826  {cm}^{3}}</p><p></p><p></p><p>$

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Answer 2

Answer:

Areaofshadedportion</p><p></p><p>

=π(r

2

2

−r

2

1

)</p><p></p><p>

=3.14((50)

2

−(40)

2

)</p><p></p><p>

=3.14×900</p><p></p><p>

=2826 cm

3

</p><p></p><p></p><p>

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ignore <p> symbols

Step-by-step explanation:

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