If those are the dimensions of a rectangular block, you need to calculate the area of the six rectangles, and add them all up. In other words (and since there are two rectangles of each type):Area = 2 x 2 x 1.5 + 2 x 2 x 1 + 2 x 1.5 x 1
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Assuming the dimensions given refer to the side lengths of a cuboid, the answer is 13 cm^2.
A cube has six square faces. This cubes faces are 2 x 2 ie 4cm2 so overall surface area is 24 cm2.
A cube has 6 faces each face is area 2x2 = 4 square cm surface area = 6 x 4 = 24 sq cm
1 side of square = 2cm area of square = side x side so, area= 2x2 = 4 cm^2
It depends what units you use for each side ! A 1cm x 15cm rectangle has a perimeter of 16cm. So does a 2cm x 4cm one ! If you start using millimetres, there are many more possibilities !
The surface area of a cuboid is the sum of all the areas of all its faces: 2 ends + 2 fronts + 2 tops = 2 x (area_of_end + area_of_front + area_of_top). For a 2cm x 3cm x 5cm cuboid, the surface area is: 2 x (2 x 3 + 2 x 5 + 3 x 5) cm3 = 2 x (6 + 10 + 15) cm3 = 2 x 31 cm3 = 62 cm3