A certain forest covers an area of 3500 km² suppose that each year this area decreases by 6.75% what will the area be after 15 years?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Solving algebraic equations 2m+3=11