x^2 - x - 2 is the answer
The answer is 987
9 + 8 +7 = 24
nearest 100 is 1000
nearest 10 is 90
so 987
SA = 2bA (base area) + LA (lateral area)
bA = r^2*pi = 13^2pi = 169pi cm^2
LA = 2r*pi*h = 2*13*pi*88,4 = 2298,4pi cm^2
SA = (2*169pi)+2298,4 pi = 338pi+2298,4pi = 2636,4pi