3 years ago

If A varies direct as a square of R. Find the % increase in A if R is increase by 20%.

Mathematics

1 answer:

katen-ka-za [31]3 years ago

4 0

Answer:

20%

Step-by-step explanation:

A=R^2

120/100

=1.2

1.2R= new value of R

original of R=R

A^1/2=R

change/origionalx100%

(1.2A^1/2-A^1/2)

-------------------- x 100%

A^1/2

A^1/2 (1.2-1)

--------------- x100%

A^1/2

0.2

---- x100

0.2x100

=20%

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If A varies direct as a square of R. Find the % increase in A if R is increase by 20%.​

If A varies direct as a square of R. Find the % increase in A if R is increase by 20%.