Question

A square is 5cm by 5cm. A student measures a side of a square as 4.9cm. She uses her measurement to calculate the area of the square. find the percentage error
1. Length of the side
2.area of the square

Answer 1

Answer:

1.) 2%

2.) 3.96%

Step-by-step explanation:

Wrong side = 4.9cm

Correct side = 5cm

Percentage of correct side = (4.9/5)*100

= 98%

Percentage error = 2%

Wrong area = (4.9)²

= 24.01 cm²

Correct area = 5²

= 25 cm²

Percentage of correct Area = (24.01/25)*100

= 96.04%

Percentage error =3.96%