Question

perimeter of rectangle,square, triangle​

Answer 1

Step-by-step explanation:

Perimeter and Area of Rectangle:

● The perimeter of rectangle = 2(l + b).

● Area of rectangle = l × b; (l and b are the length and breadth of rectangle)

● Diagonal of rectangle = √(l² + b²)

Perimeter and Area of the Square:

● Perimeter of square = 4 × S.

● Area of square = S × S.

● Diagonal of square = S√2; (S is the side of square)

Perimeter and Area of the Triangle:

● Perimeter of triangle = (a + b + c); (a, b, c are 3 sides of a triangle)

● Area of triangle = √(s(s - a) (s - b) (s - c)); (s is the semi-perimeter of triangle)

● S = 1/2 (a + b + c)

● Area of triangle = 1/2 × b × h; (b base , h height)

● Area of an equilateral triangle = (a²√3)/4; (a is the side of triangle)

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Answer 2

Answer:

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Formula for perimeter of rectangle,

P = 2×(length + breadth)

Formula for perimeter of square,

P = 4×(a)

Where a is the side of square

Formula for perimeter of triangle,

P = A+B +C

Where a, b and c are the sides of triangle

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