NDA || Maths || Circle_Quiz

Find the value of k, if the line y = x + k touches the circle at x² + y² = 16,

A heap of rice is in the form of cone of diameter 9 m and height 3.5 m. How much canvas cloth is required to just cover heap?

show that equation x² + y² + 2x + 10y + 26 = 0 represents a point circle find its radius.

Consider two circles C₁ = x²+y²-4x-4y=0 and C₂=x²+y²=8. Let r₁ and r₂ be the radius of circles. Then which of the following is true.

If (-1, 3) and (α, β) are the extremities of the diameter of the circle x² + y² – 6x + 5y – 7 = 0, find the coordinates (α, β).