Question

tell me the perimeter and area of the following figure.

1) square
2) rectangle
3) circle
4) scalene triangle
5) equilateral triangle
6) Isocecles triangle
7) right angle triangle
8) rhombus
9) Trapezium
10) parallelogram
11) kite
12) quadrilateral​

Answer 1

Area of General Quadrilateral Formula = 1/2 x diagonals length x ( sum of the height of two triangles )

Perimeter = AB + BC + CD + DA.

Step-by-step explanation:

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Answer 2

Answer :-

1) Square

Perimeter = 4a

Area = a²

[''a'' denotes side]

2) Rectangle

Perimeter = 2(l + b)

Area = l × b

[l = length and b = breadth]

3.  Circle

Perimeter = 2πr

Area = πr²

[r = radius]

4. Scalene triangle

Perimeter = a + b + c

Area =

Step 1 ⇒ s = (a + b + c)/2

Step 2 ⇒ √s(s - a)(s - b)(s - c)

[a,b and c are sides and s is the semiperimeter]

5. Equilateral triangle

Perimeter = 3a

Area = √3/4 × a²

[a = side]

6. Isocecles triangle

Perimeter =  2a + b

Area = [1/2 × b × √(a² - b²/4)]

[a = equal sides and b = unequal side]

7) Right angle triangle

Perimeter = h + p + b

Area = 1/2 × p × b

8) Rhombus

Perimeter = 4s

Area = d₁ × d₂/2

9) Trapezium

Perimeter = a + b + c + d

Area = 1/2 × (a + b) × h

10) Parallelogram

Perimeter = 2(b + h)

Area = b × h

11) Kite

Perimeter = 2(a + b)

Area = d₁ × d₂/2

12) Quadrilateral​

Perimeter = a + b + c + d

Area = 1/2 × D1 × D2 × (sum of height of two triangles )