Question

the basis of an isosceles rectangle is 30 cm its area is​

Answer 1

Answer:

YOUR ANSWER IS 450√2

Step-by-step explanation:

SO AS MENTIONED, RECTANGLE IS ISOSCELES, SO DON'T WORRY, CONSIDER IT AS A NORMAL RECTANGLE.

NOW DRAW A DIAGONAL OF RECTANGLE..

SO THE DIAGONAL WILL BISECT THE ANGLE OF THAT CORNER i.e (90=45+45)

NOW APPLYING TRIGONOMETRIC RATIO,

WE GET TAN 45 = L/30

TAN 45 = 1/√2

SOLVING FOR L, WE GET L= 15√2

AREA WILL BE 15√2×30= 450√2