Help me out with this 6 question with full sum please...​

1) 5cm

2) 15cm

3) 7.4cm

4) 12.5cm

5) 3.9cm

6) 10cm

Step-by-step explanation:

Square both values, then add the 2 values. After, with the answer, root it. This method applies for all the questions given.

For example:

For your first question:

4^2 + 3^2 = 25

√25 = 5cm

Hope this helps!

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50