Answer:
1) 5.0 cm² ( to two significant figures or one decimal place)
2) 1.0 (to two significant figures or to one decimal place)
3) 4.5 cm ( to two significant figures or one decimal place)
4) 0.1 cm ( to two significant figures or one decimal place)
5) The remaining answers due to incorrect rounding are 4.994 cm², 0.0 cm, 4.47 cm, 0.07 cm, 1, 1.03 cm, 4.99 cm²
Explanation:
The answers given are rounded to two significant figures or one decimal places:
1) 2.27*2.2 = 5.0 cm² ( to one decimal place)
2) 2.27/2.2= 1.0 ( to one decimal place)
3) 2.27+2.2 = 4.5 cm ( to one decimal place)
4) 2.27-2.2 = 0.1 cm ( to one decimal place)
5) The remaining answers due to incorrect rounding are 4.994 cm², 0.0 cm, 4.47 cm, 0.07 cm, 1, 1.03 cm, 4.99 cm²