1. 0
2. 1
3. 2
4. 3
0
1. (a+b+c)2
2. p(a+b+c)
3. p(a+b+c)2
4. none
p(a+b+c)2
1. 20 sq.unit
2. 10 sq.unit
3. 15 sq.unit
4. 25 sq.unit
15 sq.unit
1. 0
2. 1
3. 2
4. 3
0
1. 180/3 sq.unit
2. 183/2 sq.unit
3. 174/3 sq.unit
4. 197/2 sq.unit
183/2 sq.unit
1. 0
2. 1
3. 2
4. 3
0
1. 0
2. abc
3. 3abc
4. 1
3abc
1. 19/3 sq.unit
2. 13/2 sq.unit
3. 17/3 sq.unit
4. 17/2 sq.unit
17/3 sq.unit
1. 0
2. 1
3. 2
4. 3
2
1. (a2+b2-c2) tan C
2. (a2+b2+c2) tan C
3. (b2+c2-a2) tan C
4. none
none