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II. Solve each problem. Use the back of your paper or another sheets for the solutions but write your final answer before the letter of each questions.. (3pts each)
a. Find the surface area of a square pyramid if the length of one side of the base is 2:4m and the height of the triangular face is 4.9m.
b. The radius of spherical tank is 1.5 cm. Find its surface area.
C. The side of cube measures 25dm. Solve for the surface area of the cube.​