How much is the surface area of a cuboid 20 cm long, 15 cm wide and 5 cm high divided into two parts along the height of the block?

How much is the surface area of a cuboid 20 cm long, 15 cm wide and 5 cm high divided into two parts along the height of the block?

Two side areas are added: 2 * 5 * 15 = 150

As shown in the figure, the length of the cuboid be = 15cm, width AB = 10cm, height ad = 20cm, point m is on CH, and cm = 5cm. What is the shortest distance for an ant to climb from point a to point m along the surface of the cuboid___ ．

Cut and fold the cuboid along ch, he and be to make the face ABCD and face behc in the same plane and connect am, as shown in Figure 1. From the title, we can get: MD = MC + CD = 5 + 10 = 15cm, ad = 20cm. In RT △ ADM, according to the Pythagorean theorem, we can get: am = 25cm; cut and fold the cuboid along ch, Gd and GH to make the face ABCD and face DC

A cuboid glass jar is 20cm in length, 15cm in width, 10cm in height and 5cm in water depth. An iron block is immersed in the glass jar and the water surface rises by 0.5c

Is the volume of iron required? The volume of iron is the volume of rising water, 20 * 15 * 0.5 = 150 cubic centimeter