Answer:
see
Step-by-step explanation:
diameter=2×pi×r
diameter. 2.22/7.r
Answer:

Step-by-step explanation:
Given

Required
Find V when

Substitute
for r in 

Open bracket


Simplify the fractions

Let

So:




9514 1404 393
Answer:
>180° (more than 180°)
Step-by-step explanation:
Angles are classified as ...
- acute: < 90°
- right: = 90°
- obtuse: > 90°
- straight/linear: = 180°
- reflex: > 180°
It seems that we're looking at definitions:
obtuse : >90° :: reflex : >180°
Answer:
Because they are equal (Right angle)
Two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.