The total surface area of a cube is 253.5 sq.cm. Find its side (in cm).

If the area of a semi-circle is 1925 sq.cm, then find its radius (in cm).

The perimeter and the length of one of the diagonals of a rhombus is 26 cm and 5 cm respectively. Find the length of its other diagonal (in cm).

The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.

Respondents who say their favourite movie is D and those who say their favourite movie is B constitute what percent of the total respondents?

The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.

The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.

What is the total numbers of people who have responded to the survey?

The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.

Which movie is the favourite of most people surveyed?

A boat goes 8 km upstream and 12 km downstream in 7hours. It goes 9 km upstream and 18 km downstream in 9 hours. What is the speed (in km/h) of the boat in still water?