Question 1: A rectangular baking dish has a length of 30 cm, a width of 20 cm, and a height of 10 cm. Draw its net on the grid and calculate its total surface area.

Answer: 1600

Question 2: Construct a net for a rectangular prism with dimensions 15 cm by 10 cm by 8 cm. Label each face.

Answer: See constructed net on grid.

Question 3: Calculate the surface area of a rectangular container used for mixing ingredients, measuring 40 cm by 25 cm by 15 cm.

Answer: 3700

Question 4: Draw the net of a cube-shaped spice jar with each side measuring 8 cm. Find its surface area.

Answer: 384

Question 5: A rectangular cake needs a decorative net to cover its sides. The cake measures 20 cm in length, 12 cm in width, and 10 cm in height. Draw the net and calculate the total surface area to be covered.

Answer: 784

Question 6: A chef is designing a rectangular spice container with a length of 25 cm, width of 10 cm, and height of 15 cm. Construct its net and determine the surface area.

Answer: 950

Question 7: Explain two common mistakes made when calculating surface area from a net and how to avoid them.

Answer: Mistakes include double-counting faces and neglecting to include all faces. To avoid, carefully identify each face and verify calculations.

Question 8: Calculate the surface area of a rectangular prism with dimensions 12 cm by 8 cm by 6 cm.

Answer: 264

Question 9: A food packaging box is shaped as a rectangular prism of 50 cm length, 30 cm width, and 20 cm height. Draw its net and find the total surface area.

Answer: 4600

Question 10: Challenge: A rectangular container has a length of 40 cm, width of 25 cm, and height of 18 cm. Construct its net, then calculate and compare the surface area if the height is increased to 25 cm.

Answer: Original: 3560; Increased height: 4800

Question 11: Mixed Review: Draw the net of a prism with a base that is a rectangle 10 cm by 6 cm and a height of 9 cm. Calculate its surface area.

Answer: 174