Question

4 circles are drawn inside a 6cm square, find the area of the rest of the square

Answer 1

Answer:

$diameter \: of \: circle = 6 \div 2 = 3$

$radius = 3 \div 2 = 1.5cm$

$a \: of \: 1 \: circle = 1.5 {}^{2} \times \pi = 2.25\pi$

$a \: of \: 4 \: circles = 2.25 \times 4 = 9cm {}^{2}$

$a \: of \: square = 6 {}^{2} = 36cm ^{2}$

$a \: of \: rest = 36 - 9 = 18cm {}^{2}$