[填空题]
A solid right circular c4aa5d 0ecr 8 p,fgh8dkone has a base radius h, ,2l/ijsprh c btods,/pa: 3of 1818 cm and a slant height of 3030 cm. A smaller right c,h pcb,ipr/dhl 3,/2sts j a:oircular cone, with a vertical height of 88 cm and a slant height of 1010 cm, is removed from the top of the larger cone, as shown in the diagram.
1.Calculate the radius of the base of the cone which has been removed. cm
2.Calculate the curved surface area of the cone which has been removed. $cm^2$
3.Calculate the curved surface area of the remaining solid. $cm^2$
