Question

A square of side 80 cm ,had patterns in circles of diameter 15cm laid out each touching the other .Find the area of the square not covered by the circles​

Answer 1

Answer:

Step-by-step explanation:area of square =(side)square.

so,

80×80=6400cm

diameter =15

and , radius =15/2=7.5cm

pattern in circle =22/7 (we know that)

therefore,

remaining area = 6400 -22/7×7.5×7.5cm

6223.21cm.

please mark brainliest

Answer 2

SOLUTION

$side \: of \: square = 80cm$

$area \: of \: square \: = side \times side \\ 80 \times 80 = 6400 {cm}^{2}$

$diameter = 15cm \\ radius = 7.5cm \\ area \: of \: circle = \pi {r}^{2} \\ = \frac{22}{7} \times 7.5 \times 7.5 \\ = 176.71 {cm}^{2}$

$area \: of \: square \: not \: covered \: by \: the \: circle \\ = area \: of \: square - area \: of \: circle \\ 6400 {cm}^{2} - 176.71 {cm}^{2} \\ = 6223.29 {cm}^{2} aprox.$