Advertisements
Advertisements
प्रश्न
Find the sum of the lengths of the bases of a trapezium whose area is 4.2 m2 and whose height is 280 cm.
Advertisements
उत्तर
Area of the trapezium = 4.2 m2
Height = 280 cm \[=\frac{280}{100}m = 2.8 m\]
Area of trapezium\[= \frac{1}{2} \times(\text{ Sum of the parallel bases })\times(\text{ Height })\]
\[4.2 =\frac{1}{2}\times(\text{ Sum of the parallel bases })\times2.8\]
\[4 . 2 \times 2 = (\text{ Sum of the parallel bases })\times2.8\]
\[\text{ Sum of the parallel bases }= \frac{8 . 4}{2 . 8} = 3 m\]
संबंधित प्रश्न
The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and 1.2 m and perpendicular distance between them is 0.8 m.
Top surface of a raised platform is in the shape of a regular octagon as shown in the figure. Find the area of the octagonal surface.
Find the area of trapezium with base 15 cm and height 8 cm, if the side parallel to the given base is 9 cm long.
Find the area of a trapezium whose parallel sides of lengths 10 cm and 15 cm are at a distance of 6 cm from each other. Calculate this area as
the sum of the areas of two triangles and one rectangle.
Find the area of a trapezium whose parallel sides of lengths 10 cm and 15 cm are at a distance of 6 cm from each other. Calculate this area as the difference of the area of a rectangle and the sum of the areas of two triangles.
Find the area of Fig. as the sum of the areas of two trapezium and a rectangle.
The area of a trapezium is 91 cm2 and its height is 7 cm. If one of the parallel sides is longer than the other by 8 cm, find the two parallel sides.
The area of a trapezium is 384 cm2. Its parallel sides are in the ratio 3 : 5 and the perpendicular distance between them is 12 cm. Find the length of each one of the parallel sides.
In Fig. 20.38, a parallelogram is drawn in a trapezium, the area of the parallelogram is 80 cm2, find the area of the trapezium.
The areas of two circles are in the ratio 49 : 64. Find the ratio of their circumferences.
