Question

aree yaar kal maths ka test hai

koi formulas dedo only Area and perimeter of circle , Triangle , rectangle ?? class please

Answer 1

⭕Circle:---

➡Area = Π × r²

➡Circumference = 2 × Π × r

✨r = radius of circle.

⭕Rectangle :---

➡Area = length × breadth

➡Perimeter = 2(length + breadth )

⭕Traingle :---

➡Area=1/2 × base × height

Or

✨For any traingle ⤵

➡√s(s-a)(s-b)(s-c)

Or,

in co-ordinate system,

= $X_1(y_3 -y_1) +X_2(y_1 - y_2) + X_3(y_2 - y_3)$

➡perimeter = sumof all sides.

Answer 2

perimeter of circle = 2pie r²

area of circle = pie r²

perimeter of triangle = a+b+c

area of triangle 1/2×base×height

perimeter of rectangle = 2(lenght+breadth)

area of rectangle = length×breadth