Please help! I need help with a clear explanation..

138920m^2

Step-by-step explanation:

Like you can see from the picture, piramide has square for base, and 4 triangle.

Surface is sum of those element.

S=B+4T, B is surface for Base and T is survace are for triangle, and all 4 triangle are the same, because we use 4T.

B is square so,

B=a*a=230*230=52900m^2

T=a*h/2=230*187/2=21505m^2

S=52900+4*21505=52900+86020=138920m^2

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.