If one side of the base in the last figure measure 20 cm, the edge from the vertex at the vertex at the top and anyone of the base measure 13cm and the area of the base is 1039.23cm2. find the total area of the pyramid

The answer would be 5< 6n

Ithink the answer may be -7 by when dividing both sides by -3

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.