Answer:
61.8 sq.cm
Step-by-step explanation:
surface area of triangular pyramid is given by
A=bh+L (s1+s2+s3)
A=3 (2.6)+6 (3+3+3)=61.8 sq.cm
15 batteries.
2 /-3 and - 2/3 are equivalent to - (2/3)
