For problems 6-7, find the surface area of the regular rpyramids shown to the nearest whole number. 6. 72ft 128ft 56ft 22ft 7. 1300m2 390m 650m2 628m2

6. Base = 4*4 = 16
1 side = 1/2 x 4 x 7 = 14
14 x 4 sides = 56

total: 56 + 16 = 72 ft^2

7. 
base = 1/2 x perimeter x apathem
base = 1/2*(6*10) * 5sqrt3
base = 259.81 round to 260

1 side = 1/2 x 10 x 13 = 65
6 sides = 65 *6 = 390

total = 390 + 260 = 650 m^2

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