Answer:
hypotenuse is 22.47 m
Step-by-step explanation:
The length of both legs of a right angle triangle are 8m and 21 m
We need to find the hypotenuse
To find hypotenuse we use Pythagorean theorem
Hypotenuse is AC and other two legs are AB and BC

Hypotenuse ^2 = 8^2 + 21^2
hypotenuse = 
= 
= 
= 22.47
So the length of the hypotenuse is 22.47 m
True, In Euclidean geometry an equilateral triangle must be a 60-60-60 triangle.
Hope This Helps!!!
Answer:
the other point could be 2.8
Step-by-step explanation:
in circle values of both x and are almost equal in magnitude
since 2.8 is closest to 3 i magnitude
hence 2.8 will be correct option
this point will lie in third coordinate
as third coordinate has points
(-x,y)
and coordinates of points lie on the circle are
(-3,2.8)