Find the sum of the whole numbers from 1 to 620?

Hey there

Step-by-step explanation:

The sum of the integers from 1 to 620 is as follows: 192,510 To get the answer above, you could add up all the digits like 1+2+3... +620, but there is a much easier way to do it! Use the following formula: n(n + 1)/2 = Sum of Integers In this case, n=620, thus you get your answer by entering 620 in the formula like this: 620(620 + 1)/2 = 192,510

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7. 153.86 ft

8. 12.56 ft

9. 78.5 m

10. 379.94 in

11. 132.665 m

12. 12.56 yd

13. 226.865 ft

14. 113.04 ft

15. 63.585 ft

16. 254.34 m

17. 50.24 cm

step-by-step explanation:

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look a the sides they are perpendicular