Perimeter and A...

A wire is bent into the shape as shown. It is made up of $$5$$ semicircles. What is the length of the wire? (Take $$\pi =3.14$$)

The number of revolutions a wheel of diameter $$40 cm$$ makes in travelling a distance of $$176 m$$ is: $$\displaystyle  \left ( \pi =\frac{22}{7} \right )$$

Find the area of the figure shown above.

Samuel wanted to implant some vertical stones along the boundary of his plot at a distance of $$10$$ m each. If length of the plot is $$30$$ m and the breadth is $$15$$ m, then the number of stones used is:

Area of the shaded figure is:

The adjacent sides of a parallelogram are $$8\ m$$ and $$5\ m$$. The distance between the longer sides is $$4\ m$$. What is the distance between the shorter sides?

Expenditure incurred in cultivating a square field at the rate of Rs. $$170$$ per hectare is Rs. $$680$$. What would be the cost of fencing the field at the rate of Rs. $$3$$ per meter?

If a wire is bent into the shape of a square, the area of the square is $$81$$ sq cm. When the wire is bent into a semicircular shape, what is the area of the semicircle? $$ \displaystyle \left ( \pi =\frac{22}{7} \right )$$

Front side wall of a house consists of a rectangle of $$6$$ m $$\times$$ $$4$$ m surrounded by a semicircle with base $$4$$ m It has two isosceles triangles make with vertical sides of the rectangle The net area of the wall in sq m is :

Area of the shaded region is