if the area of the smallest square 12cm2,what is area of the entire figure

The sum of area of all squares in the following figure is 56250 dm2.The area of the smallest square is ....cm2.

the figure below is made up of 4 squares its perimeter is 40 cm . what is the area of one square ?

A 6 digit number begins with the digit 8. The number is divisible by 9 and all digit of the number are different . What is the possible smallest value of this number ?MNPQ is the square that is made up of to identical rectangles and two square of area 9cm2 and 16cm2. The area of the square MNPQ is ?I have two digit in the decimal part.Iam greater than 75 but less than 80 . What least possible number am I ?

In the following figure, ABED and BCFE are square. If the perimeter of the rectangle ACFD is 54cm then its area is  

Given a square with the length of one side is 8 cm and a isosceles triangle with the length of its base is 12 cm. If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm? 

The sum of all square's area in the following figure is 375cm².
The area of the biggest square is ............ dm².

The sum of all square's area in the following figure is 375cm².
The area of the biggest square is ............ dm².

the side of each small square in the figure is 4 cm. Calculate the area of the quadrilateral ABC.