for <span>a Square Pyramid </span>[lateral area]=4*[a*s/2]--------> 2aS where a is the length side of the square base S is the <span>slant height </span>a=145 ft S=856.1 ft [lateral area]=2*145*856.1---------> 248269 ft²
So if you have a budget of 12 dollars, and the book is 7 dollars, subtract 12-7 and you get 5 dollars. And half of 5 dollars is 2.50. And if there is 2 cards, then that means that 1 card is 2.50