Mahabir Singh Solutions for Chapter: Perimeter and Area, Exercise 1: Exercise

In the given figure, all triangles are equilateral and $PQ=12$ units. Other triangles have been formed by taking the midpoints of the sides. What is the perimeter of the figure?

The area of the two circles are in the ratio $25:36$. Then the ratio of their circumference is

The length of the sides of a triangle are $5 \mathrm{m}, 1.2 \mathrm{decametre}$ and $130 \mathrm{dm}$. Then its area is

Ishika has designed a small oval racetrack for her remote control car. Her design is shown in the figure. What is the total distance around the track? Round your answer to the nearest whole $\mathrm{cm}$.

In a parallelogram $ABCD$, diagonal $AC$ measures $34 \mathrm{m}$ and the perpendicular distance of $AC$ from either of the vertices $B$ and $D$ is$12 \mathrm{m}$. Area of parallelogram is 

If the radius of a circle is tripled, the area becomes

Area of the shaded portion is

In the given figure,$\mathit{ }ABCE$ is a parallelogram. $P$ is the midpoint of $AD$ and $AD\perp EC$. If  $AD=20 \mathrm{cm}$ and  $EC=18 \mathrm{cm}$, then find the area of the given figure.