Question

find the answer
step by step:​​

Answer 1

Answer:

1,perimeter of triangle =sum of all sides

=12+16+20

=48 cm

2,perimeter of square =4×side

=4×15

=60 cm

3,perimeter of rectangle=2×(L+B)

=2×(8+20)

=2×28

=56 cm

4,perimeter of parallelogram =sum of all parallel sides

=10+12+22

=44 cm

#raja moksh

Answer 2

✯Solution :

✯1. Triangle

Let's solve this !

➝Perimeter of Triangle ∆ = a + b + c

➝ 16 + 20 + 12

➝ 48cm

➝ Area of Triangle ∆ = ab/2

➝ 16×12 / 2

➝ 8×12

➝ 96cm^2

✯2. Square

Let's solve this !

➝ Perimeter of Square ⬛ = 4 × side

➝ 4×15

➝ 60 cm

➝ Area of Square ⬛ = side × side

➝ 15×15

➝ 225 cm^2

✯3. Rectangle

let's solve this too !

➝ Perimeter of Rectangle = 2×( L + B )

➝ 2×(20+8)

➝ 2×(28)

➝ 56 cm

➝ Area of Rectangle = L×B

➝ 20×8

➝ 160 cm^2

✯4. Parallelogram

Let's solve this too !

➝ Perimeter of Parallelogram = 2×(a+b)

➝ 2 × (22+12)

➝ 2×32

➝ 64 cm

➝ Area of Parallelogram = b × h

➝ 22×10

➝ 220 cm^2

___________________________________

• Formula's used in this Question :

➝Perimeter of Triangle ∆ = a + b + c

➝ Area of Triangle ∆ = ab/2

➝ Perimeter of Square ⬛ = 4 × side

➝ Area of Square ⬛ = side × side

➝ Perimeter of Rectangle = 2×( L + B )

➝ Area of Rectangle = L×B

➝ Perimeter of Parallelogram = 2×(a+b)

➝ Area of Parallelogram = b × h