Maths Quiz 1

1. One side of right angled triangle is x . Its hypotenuse is 2x. What is its area?
2. The numerals of volume and total surface area of a sphere are equal. What is its radius ?
3. 8 persons can complete a work in 9 days. If the same work should be completed in 6 days, how many workers are needed more ?
4. The area of a square is 300cm² . Find the area of the square having the diagonal of the first square as a side.
    
   
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