Question

The side of a square plate is given by (5±1%)cm. It's area with error is ? ​

Answer 1

Answer:

not sure could you explain more maybe?

Answer 2

Explanation:

area with side 5 cm is 5*5=25cm²

for the error, since error percentage is small, 1%,

the percentage error will be 2*1% i. e 2%.

this is obtained by the approximation that

(a+x)² = a²+2x when x is small compared to a.

therefore area is 25±2% cm²