Answer:
Step-by-step explanation:
Answer:
BC=√7
Step-by-step explanation:
AC=4
AC=AH+HC
=3HC+HC
=4HC
HC=1/4AC=1/4×4=1
AH=3HC=3×1=3
BH⊥ AC
AB=AC=4

Answer:
The sum of the areas of all the surfaces (faces) of a three-dimensional figure.
Step-by-step explanation: