6th Class
Mathematics
Mensuration
Question Bank
Mensuration Basics
question_answer
In the given figure (1), (2), (3) and (4) are squares. The perimeter of the square (1) and (2) are respectively 20 and 24 units. The area of the entire figure.
A) 471 sq. unit
B) 747 sq. unit
C) 417 sq. unit
D) 472 sq. unit
Correct Answer:
A
Solution :
Perimeter of '1'= 20 unit \[\therefore \]Side \[=\frac{20}{4}\equiv 5\] unit Perimeter of '2'= 24 unit \[\therefore \] Side \[=\frac{24}{4}=6\] unit Area of entire figure \[=\left\{ {{\left( 5 \right)}^{2}}{{(6)}^{2}}+{{(11)}^{2}}+{{(17)}^{2}} \right\}\] \[=\{25+36+121+289\}=471\,\,sq.\]units