एक वर्गाकार मैदान का क्षेत्रफल 1 हेक्टेयर है। इसका परिमाप क्या है?

Four identical squares are joined together to form a rectangle whose area is 256 sq units. What is the perimeter of each individual square?

A hall is 42 m long and its breadth is 13 of its length. Its floor is to be completely covered with rectangular tiles, each measuring 50 cm in length and 30 cm in breadth. Find the total number of tiles required.