Question

sonal wants to make a disc to play she cuts a circle of diameter 10cm from a circular plastic sheet of diameter 14cm find the area of the disc are also find the area of the remaining plastic sheet (take pie=3.14)

Answer 1

Hey Friend ✋✋✋

Radius of Disc = 5 cm

Radius of sheet = 7 cm

Area of disc = πr²

$= \frac{22}{7} \times 5 \times 5 \\ \\ = \frac{550}{7} \\ \\ = 78.5$

Remaining area of sheet = Area of Sheet - Area of disc

$= \frac{22}{7} \times 7 \times 7 - 78.5 \\ \\ = 154 - 78.5 \\ \\ = 75.5$

Hope it helps

Answer 2

adius of Disc = 5 cm

Radius of sheet = 7 cm

Area of disc = πr²

\begin{gathered} = \frac{22}{7} \times 5 \times 5 \\ \\ = \frac{550}{7} \\ \\ = 78.5\end{gathered}

=

7

22

×5×5

=

7

550

=78.5

Remaining area of sheet = Area of Sheet - Area of disc

\begin{gathered} = \frac{22}{7} \times 7 \times 7 - 78.5 \\ \\ = 154 - 78.5 \\ \\ = 75.5\end{gathered}

=

7

22

×7×7−78.5

=154−78.5

=75.5

Hope it helps