The sides of certain triangles are given below. Determine which of them are right triangles.

(iv) $a\ =\ 8\ cm,\ b\ =\ 10\ cm$ and $c\ =\ 6\ cm$

(iii) $a\ =\ 1.6\ cm,\ b\ =\ 3.8\ cm$ and $c\ =\ 4\ cm$

(ii) $a\ =\ 9\ cm,\ b\ =\ 16\ cm$ and $c\ =\ 18\ cm$

What must be added to the numbers 6,10,14 and 22 so that they are in proportion?

Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centers is 4 cm. Find the length of the common chord.

Write the following integers in descending order:$-99,-990,777,-567,345,-354$.

How much work is done in moving a charge of $2 \mathrm{C}$ across two points having a potential difference of $12 \mathrm{~V}$ ?

What is the SI unit of potential difference?

How much work is done when one coulomb charge moves against a potential difference of 1 volt?

What is meant by saying that the electric potential at a point is 1 volt?

We are really eager to clarify your doubts