Mathematics
The total surface area of a solid sphere (S1) and a solid hemisphere (S2), as shown in the diagram, are equal. The ratio of radii R and r is : 1. 1 : 1 2. 2 : 1 3. : 2 4. 2 :
Related Questions
Find the equation of a line whose y-intercept is 6 and is parallel to x-axis.
y = 6
x = 6
x + y = 6
y − x = 6
Asha buys ₹ 20 shares of a company which pays 9% dividend at such a price that she gets a return of 12% on her investment. At what price did she buy each share?
₹ 20
₹ 15
₹ 25
₹ 18
In the given diagram, O is the centre of the circle and ABCD is a cyclic quadrilateral. If ∠CDE = 65°, then the value of x is :
32.5°
65°
115°
130°
The nature of roots of quadratic equation 3x2 − 6x − 3 = 0 are :
real and equal
real, distinct and rational
real, distinct and irrational
no real roots