Answer:
35cm
Step-by-step explanation:
Given data
Length= 21cm
Width= 28cm
Diagonal= ???
Applying Pythagoras theorem
D^2= L^2+W^2
D^2= 21^2+28^2
D^2= 441+784
D^2= 1225
D= √1225
D= 35cm
Hence the diagonal is 35cm
2 ROUTE 113
Pythagorean theorm.
Factor it out.
Simplify the radical.
x = 4/5
y = 1/2
2700, my friend. :P
n = 225
Multiply 15 by 15