A hemishpercal bowl is made of steel 0.25 cm thick. The inner radius of the bowl is 5 cm . Find the outer curved surface area of bowl
Y=(x+root of x2+a2)n
In the adjoining figure abcd is a cyclic quadrilateral. angle cbq =48 degree and a = 2b. Find b.
Find the simplest rationalising factor of 27
 please solve 42nd question