Question

permanganate ion reacts with sulphur dioxide gas in acidic medium to produce mn2+ ion and hydrogen sulphate ion.( balance in acidic medium) ​

Answer 1

Explanation:

Given:-

AC = hypotenuse = 25cm

BC = AD = breadth = 7cm

It's a rectangle, so ∠ABC = 90°

Solution :-

By using Pythagoras theorem,

(Hypotenuse)² = (Perpendicular)² + (Base)²

⇒ (25cm)² = (7cm)² + (base)²

⇒ 625cm² = 49cm² + base²

⇒ base² = 576cm²

⇒ base = √576cm²

⇒ base = 24cm

Here, base is equal to the length of rectangle.

Perimeter of rectangle = 2(length + breadth)

⇒ Perimeter = 2( 24 + 7)cm

⇒ Perimeter = 2(31)cm

⇒ Perimeter = 62cm

Therefore, perimeter of rectangle is 62cm.