Opposite lateral faces of a rectangular pyramid are congruent.
I think is OPPOSITE .
59.4cm
Use Pythagorean theorem to find the diagonal (^ means exponent)
a^2 + b^2 = c^2
42^2 + 42^2= c^2
1764+1764=c^2
3528=c^2
square root both sides
c= 59.39696962
round and you get 59.4 cm
Pi*r^2
3.14*7000^2
153,860,000
