C & E kayak gimana ya?

C.) panjang busur =60/360 x 2 x 22/7 x 7
= 1/6 x 44
= 7,33 cm
E.) luas juring = 60/360 x 22/7 x 7 x 7
= 1/6 x 154
= 25,66 cm ^2 (persegii)