Draw an equilateral triangle whose sides are 5.2 cm. each

In which of the following situations, does the list of numbers involved is in the form of a GP? (i) Salary of Sharmila, when her salary is 5,00,000 for the first year and expected to receive yearly increase of 10%. Number of bricks needed to make each step, if the stair case has total 30 steps, provided that bottom step needs 100 bricks and each successive step needs 2 brick less than the previous step. Perimeter of the each triangle, when the mid points of sides of an equilateral triangle whose side is 24 cm are joined to form another triangle, whose mid points in turn are joined to form still another triangle and the process continues indefinitely.

The area of an equilateral triangle with each side measuring 10 cm is …………. cm^(2)

Construct a triangle with sieds 5 cm, 6 cm and 7 cm and then another triangle whose sides are 7/5 of the corresponding sides of the first triangle.

ABC is an equilateral triangle of side 2a. Find each of its altitude.

In an equilateral triangle with side a, prove that, the area of the triangle (sqrt(3))/(4)a^(2) .

In an equilateral triangle with side a, prove that, the altitude is of length (sqrt(3))/(2)a .

DeltaABC" and "DeltaDEF are two equilateral triangles of sides 4 cm and 2 cm respectively. Find the ratio of ar(ABC) and ar(DEF).

Draw an equilateral trianglePQR with perimeter 18cm. Write the steps of constrcutions.

Find the area of the shaded region in the given figure, where a circular arc of radius 6 cm has been drawn with vertex O of an equilateral triangle OAB of side 12 cm as centre.

Draw a right trianlge in which the side (other than hypotenuse) are of length 4 cm and 3 cm. Then construct another triangle whose sides are 5/3 times the corresponding sides of the given triangle.