What is radius of sphere, if
its area is 154 m2?
a) 2.5
b) 3.5
c) 4.5
d) 5.5
In a right-angled triangle,
the base angle is 450, whereas the base length is 3 dm. find the length
of perpendicular.
a) 2 dm
b) 3 dm
c) 6 dm
d) 8 dm
