एक आयत की चौड़ाई 255 सेमी है और इसका विकर्ण 663 सेमी है। इसका परिमाप ज्ञात कीजिए।

A technician works with two square plates of side lengths 42 cm and 35 cm. From their combined area, a square portion with a side length of 28 cm is removed. What is the remaining area in cm2?

A square and a rectangle have the same perimeter. The length of the rectangle is twice its width. If the side of the square is 12 meters, what is the difference between the area of the square and the area of the rectangle?