Final answer:
The surface area of rectangular block with a height of 15 cm, a width of 8 cm, and a length of 12 cm is 792 cm².
Step-by-step explanation:
The surface area of a rectangular block can be found by adding up the areas of all its sides. Each side of the block is a rectangle, and the area of a rectangle is calculated by multiplying its length by its width.
Given the dimensions of the block:
- Height: 15 cm
- Width: 8 cm
- Length: 12 cm
To calculate the surface area, we can calculate the area of each side and add them together.
1. Top and bottom sides: The top and bottom sides of the block have the same dimensions, so the area of each side is (8 cm) * (12 cm) = 96 cm².
2. Front and back sides: The front and back sides of the block also have the same dimensions, so the area of each side is (15 cm) * (12 cm) = 180 cm².
3. Left and right sides: The left and right sides of the block have the same dimensions, so the area of each side is (15 cm) * (8 cm) = 120 cm².
Now, we can calculate the total surface area by adding up the areas of all the sides:
Total surface area = 2 * (top and bottom area) + 2 * (front and back area) + 2 * (left and right area)
= 2 * 96 cm² + 2 * 180 cm² + 2 * 120 cm²
= 192 cm² + 360 cm² + 240 cm²
= 792 cm²
Therefore, A rectangular block with a height of 15 cm, a width of 8 cm, and a length of 12 cm, then its surface area is 792 cm².
Your question is incomplete, but most probably the full question was:
What's the area of this figure? (No figure or description of the figure provided)
Rectangular block: Height: 15 cm, width: 8 cm, length: 12 cm