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
Answer:
17
Step-by-step explanation:
Substitute the value of the variable and simplify.



Anything raised to the power of 0 is one.
16 + 1 = 17
Answer:
Step-by-step explanation:
5×4+5×3
20+15
25