20 cm. is almost as wide as the standard phone book. Or to put it in other terms, standard letter paper is 8 1/2 inches wide, or 21.5 cm.
Perimeter = 25+20+25+20 = 90 cm
90
Multiply 20 x 15 x 78 = 23400 cubic cm = 1428 cubic inches
The area of a rectangle is calculated by multiplying its length by its width. For a rectangular photo that is 20 cm long and 15 cm wide, the area would be 20 cm × 15 cm = 300 cm². Thus, the area of the photo is 300 square centimeters.
volume = length x width x height = 20 x 10 x3 = 600 cubic cm
A head of what object? A human head is likely to be around 20 cm wide.
Perimeter = 25+20+25+20 = 90 cm
840
90
The 20 cm cube can be sliced into four(a) layers - each one 20 cm wide, 20 cm long and 5cm high. Each of those layers can be sliced into four(b) strips 20 cm wide, 5 cm long and 5 cm high Each of those strips can be sliced into four(c) cubes 5cm wide, 5 cm long and 5 cm high Four(a) x four(b) x four(c) = 64
20 cm times 15 cm = 300 square cm
Multiply 20 x 15 x 78 = 23400 cubic cm = 1428 cubic inches
The area of a rectangle is calculated by multiplying its length by its width. For a rectangular photo that is 20 cm long and 15 cm wide, the area would be 20 cm × 15 cm = 300 cm². Thus, the area of the photo is 300 square centimeters.
volume = length x width x height = 20 x 10 x3 = 600 cubic cm
It is: 400/20*5 = 4 cm
4cm in width
20 cm * 30 cm * 8 cm = 4800 cm3