Question

perimeter of triangle​

Answer 1

Step-by-step explanation:

The perimeter of a triangle is the sum of all its three sides. We can work out the perimeter using the following formula: Perimeter of a triangle = sum of all three sides. If a, b and c are the sides of the triangle, then. Perimeter of triangle = a + b + c.

Answer 2

Perimeter of Triangle = sum of all sides

More:-

Perimeter of:-

• Rectangle = 2(l + b)
• Square/Rhombus = 4 × s
• Circle = 2πr
• Parallelogram = Same as rectangle

Area of:-

• Rectangle = lb
• Square = s × s
• Circle = πr²
• Rhombus = ½ • D1 • D2
• Triangle:-

1. Equilateral = (√3)/4 s²
2. Isosceles = b/2√a² - b²/4
3. (Scalene) = √s(s - a)(s - b)(s - c)

• Cyclic quadrilateral = √s(s - a)(s - b)(s - c)(s - d)

Diagonal of:-

• Square = s√3
• Rectangle = √l² + b² + h²

Volume of:-

• Cube = s × s × s
• Cuboid = l × b × h
• Right circular cylinder = πr²h
• Right circular cone = ⅓ πr²h
• Sphere = 4/3 πr³
• Hemi sphere = ⅔ πr³

Surface area of:-

• Cuboid = 2(lb + bh + lh)
• Cube = 6 × s²
• Right circular cylinder = 2πr(r + h)
• Right circular cone = πr(r + l)
• Sphere = 4πr²
• Hemisphere = 3πr²

Lateral surface area of:-

• Cuboid = 2h(l + b)
• Cube = 4 × s²
• Right circular cone = πrl
• Right circular cylinder = 2πrh
• Sphere = since there is no flat side, LSA = TSA.
• Hemisphere = 2πr²

Area of sector of a circle = θ/360° × πr²