exam Maths Puzzle Numerical Ability

A circle whose equation is (x+5)^2+(y+3)^2=36 is stretched by a factor of 1/4. What is the new equation? I think it is (x+5)^+(y+3)^2=9/4 ?????? Can someone please help me???

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exam Other Question

Find two consecutive integer whose product is 72
Let X = 1st integer
Let 2x= 2nd integer

2x+x=72 Assuming that a planet is a perfect sphere with a circumference of 20771 km and an average density of 2.41 g/mL, what is its approximate mass?