मराठी

Calculate the area of the figure given below: Which is not drawn scale. - Mathematics

Advertisements
Advertisements

प्रश्न

Calculate the area of the figure given below:

Which is not drawn scale.

बेरीज
Advertisements

उत्तर

Here we found two geometrical figures,

One is a triangle and the other is a trapezium.

Now,

Area of the Triangle = `1/2 xx 12 xx 25`

= 150 sq. cm

Area of Trapezium = `1/2 xx ( 25 + 15 ) xx ( sqrt(26^2 - ( 25 - 15 )^2))`

= 20 × 24

= 480 sq. cm

Hence, the area of the whole figure = 150 + 480

= 630 sq. cm

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 20: Area and Perimeter of Plane Figures - Exercise 20 (B) [पृष्ठ २५६]

APPEARS IN

सेलिना Concise Mathematics [English] Class 9 ICSE
पाठ 20 Area and Perimeter of Plane Figures
Exercise 20 (B) | Q 23 | पृष्ठ २५६

संबंधित प्रश्‍न

Find the area of a quadrilateral one of whose diagonals is 30 cm long and the perpendiculars from the other two vertices are 19 cm and 11 cm respectively. 


A rectangular plot of land measures 45 m x 30 m. A boundary wall of height 2.4 m is built all around the plot at a distance of 1 m from the plot. Find the area of the inner surface of the boundary wall.


Trapezium given below; find its area.


A wire when bent in the form of a square encloses an area of 484 m2. Find the largest area enclosed by the same wire when bent to from:

  1. An equilateral triangle.
  2. A rectangle of length 16 m.

How many tiles, each of area 400 cm2, will be needed to pave a footpath which is 2 m wide and surrounds a grass plot 25 m long and 13 m wide? 


The shaded region of the given diagram represents the lawn in the form of a house. On the three sides of the lawn, there are flowerbeds having a uniform width of 2 m.

(i) Find the length and the breadth of the lawn.
(ii) Hence, or otherwise, find the area of the flower-beds.


Find the area and perimeter of a square plot of land, the length of whose diagonal is 15 meters. Given your answer correct to 2 places of decimals. 


A triangle and a parallelogram have the same base and the same area. If the side of the triangle is 26 cm, 28 cm, and 30 cm and the parallelogram stands on the base 28 cm, find the height of the parallelogram.


Find the area of a quadrilateral field whose sides are 12m, 9m, 18m and 21m respectively and the angle between the first two sides is a right angle. Take the value of `sqrt(6)` as 2.5.


If the diagonal d of a quadrilateral is doubled and the heights h1 and h2 falling on d are halved, then the area of quadrilateral is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×