Write in the form of an algebraic expression :(i) Perimeter (P) of a r

1.	Write in the form of an algebraic expression :(i) Perimeter (P) of a rectangle is two times the sum of its length (l) and its breadth (b).(ii) Perimeter (P) of a square is four times its side.(iii) Area of a square is square of its side.(iv) Surface area of a cube is six times the square of its edge.
Answer» (i) Let P be the perimeter and / be the length, and b be the breadth. P = 2 (l + b) (ii) Let P be the perimeter and a be the side of the square. P = 4a (iii) Let A be the area of the square and a be the sides of the square. A = (a)² (iv) Let S be the surface area and a be the edges of the cube. S = 6a²

Write in the form of an algebraic expression :(i) Perimeter (P) of a rectangle is two times the sum of its length (l) and its breadth (b).(ii) Perimeter (P) of a square is four times its side.(iii) Area of a square is square of its side.(iv) Surface area of a cube is six times the square of its edge.

Answer»

(i) Let P be the perimeter and / be the length, and b be the breadth.

P = 2 (l + b)

(ii) Let P be the perimeter and a be the side of the square.

P = 4a

(iii) Let A be the area of the square and a be the sides of the square.

A = (a)²

(iv) Let S be the surface area and a be the edges of the cube.

S = 6a²