## How do you find the total surface area of a triangular prism?

The formula of the surface area of a right triangular prism is (Length × Perimeter) + (2 × Base Area) = (s1 s 1 + s2 s 2 + h)L + bh where b is the bottom edge of the base triangle, h is the height of the base triangle, L is the length of the prism and s1 s 1 , s2 s 2 are the two edges of the base triangle.

### How do you find the surface area of a prism BBC Bitesize?

- Area of cross section = ½ × 5 × 4.3 = 10.75 cm 2
- Perimeter of cross section = 5 + 5 + 5 = 15 cm.
- Area of sides = perimeter of cross section × length = 15 × 12 = 180 cm 2
- Total surface area = 10.75 + 10.75 + 180 = 201.5 cm 2

#### How do you work out the total surface area of a prism?

In this prism, the length is also the side of the hexagon, and the width of the rectangle is the height of the prism. Now, multiply the area of the rectangle by to find the total area of all of the sides of the prism. Add together the area of the sides and of the bases to find the surface area of the prism.

**How do you find the total surface area of a rectangular prism?**

What Is the Formula for Calculating the Surface Area of a Rectangular Prism? The formula to calculate the total surface area of a rectangular prism is given as, TSA of rectangular prism = 2(lb × bh × lh), where, l is length, b is breadth and h is the height of the prism.

**What is the area of cross-section of a prism?**

Volume of a prism = Area of the Cross-Section x Length The cross-section is the two dimensional shape repeated throughout the prism’s length. You simply work out the area of this cross-sectional shape (using your knowledge on area) and then multiply that area by the length (sometimes referred to as the depth).

## How do you find the surface area and volume of a prism?

To find the surface area of a prism (or any other geometric solid) we open the solid like a carton box and flatten it out to find all included geometric forms. To find the volume of a prism (it doesn’t matter if it is rectangular or triangular) we multiply the area of the base, called the base area B, by the height h.

### What is the formula for lateral surface area?

The lateral surface area of sphere is expressed as LSA = 2πrh or 4πr2 (If a diameter of sphere = 2r). Where r is the radius of a sphere, h is the height of the sphere, and π (pi) is a constant term with a value of 3.14 or 22/7.