interface DoMath
{
double getArea(int rad);
}
interface MathPlus
{
double getVol(int b, int h);
}
/* Missing Statements ? */
which two code fragments inserted at end of the program, will allow to compile?
- class AllMath extends DoMath {
double getArea(int r); }
- interface AllMath implements MathPlus {
double getVol(int x, int y); }
- interface AllMath extends DoMath {
float getAvg(int h, int l); }
- class AllMath implements MathPlus {
double getArea(int rad); }
- abstract class AllMath implements DoMath, MathPlus {
public double getArea(int rad) { return rad * rad * 3.} }
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