Answer:
12.7
Step-by-step explanation:
Area depends on the product of sides,
so if the sides are shortened by a factor of 2, area will reduce by a factor of 4. (2×2)
new area = 10/4=2.5 cm²
math is a subject that was made to ... umm... torture kids & make them mentally depressed!! kidding...so NOT!
5+5=10
You can use your hands too. If you have 5 fingers on each hand, use your other hand to count another 5. The total would equal 10.