Lời Giải
The diameter of a circle is 7 m. Find its circumference in terms of pi\pi.
Lời Giải
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The product of two consecutive positive even integers is 48. Find the value of the lesser integerEdwin’s father is at present twice as old as Edwin. Five years ago, the sum of their ages was 59 years. Calculate Edwin’s present age.bob is 1/2 that of barry's. Five years ago, Bob was 3 times as old as Barry. Find the age of bothIf five is added to three or more than a certain number, the result is 19. What is the number?The sum of 2 numbers is 144 and their hiệu is 88 what is it