Q11 The length of an arc with a central angle of ${}^{}30°$ is given as $6 cm$. Find the circumference of the half portion circle?

Q12 The length of an arc with a central angle of ${}^{}30°$ is given as $6 cm$. Find the area of the half portion circle?

Q13 Find the radius of the circle whose area is given by 32 sq.cm?

Q14 Find the radius of the circle whose circumference is given by 32 sq.cm?

Q15 Find the diameter of the circle whose circumference is given by 32 sq.cm?

Q16 Find the area of the circle whose length of an arc with a central angle of 30 degree is given by 6 cm?

Q17 Find the length of an arc with central angle of 30 degree and has a radius of 11.46 cm?

Q18 Find the area of the semicircle whose length of an arc with a central angle of 30 degree is given by 6 cm?

Q19 Find the diameter of the circle whose length of an arc with a central angle of 30 degree is given by 6 cm?

Q20 Find the circumference of the circle whose length of an arc with a central angle of 30 degree is given by 6 cm?