It is: 2(3*4)+2(3*6)+2(4*6) = 108 square feet
It is 2*(2*3 + 3*4 + 4*2) = 52 square feet.
If it is a rectangular box-shape the area is 32 sq. ft. (3*2 + 2*2 + 3*2) *2 = 32
60 square feet
Surface area = 2*(3*4 + 4*5 + 5*3) = 2*(12 + 20 + 15) = 2*47 = 94 sq ft.
2 (5 + 3) x 6 + 2 x 5 x 3 = 96 + 30 = 126 sq feet
It is 2*(2*3 + 3*4 + 4*2) = 52 square feet.
(15 + 18 + 30) x 2 ie 126 ft2
If it is a rectangular box-shape the area is 32 sq. ft. (3*2 + 2*2 + 3*2) *2 = 32
It is: 2(3*2.5)+2(6*2.5)+2(3*6) = 81 square feet
A cylinder that has a radius of 3 ft and height of 4 ft has a surface area of 131.95 square feet.
60 square feet
Surface area = 2*(3*4 + 4*5 + 5*3) = 2*(12 + 20 + 15) = 2*47 = 94 sq ft.
2 (5 + 3) x 6 + 2 x 5 x 3 = 96 + 30 = 126 sq feet
Top = 5 x 3 = 15 sq ft Bottom = 5 x 3 = 15 sq ft 2 sides = 5 x 7 = 35 sq ft each other 2 sides = 3 x 7 = 21 sq ft each Total cardboard = 142 square feet Surface area = 142 sq ft inside, and 142 sq ft outside.
72 Feet
Provided the area is the top or bottom surface, the volume is 3 sq ft*3 ft = 9 cubic feet. If the area is for any other side, the volume cannot be determined (since the height is already included in calculating that particular area).
Surface area = 4*pi*82 = 804.248 square feet rounded to 3 dp