English

The diagonal of a quadrilateral shaped field is 24 m and the perpendiculars dropped on it from the remaining opposite vertices are 8 m and 13 m. Find the area of the field.

Advertisements
Advertisements

Question

The diagonal of a quadrilateral shaped field is 24 m and the perpendiculars dropped on it from the remaining opposite vertices are 8 m and 13 m. Find the area of the field.

Sum
Advertisements

Solution

It is given that,

Length of the diagonal, d = 24 m

The lengths of the perpendiculars, h1 and h2, from the opposite vertices to the diagonal are h1 = 8 m and h2 = 13 m

Area of the quadrilateral = `1/2` d(h1 + h2)

= `1/2` (24m) × (13m + 8cm)

= `1/2` (24 m) (21 m)

= 252 m2

Thus, the area of the field is 252 m2

shaalaa.com
  Is there an error in this question or solution?
Chapter 9: Mensuration - EXERCISE 9.1 [Page 106]

APPEARS IN

NCERT Mathematics [English] Class 8
Chapter 9 Mensuration
EXERCISE 9.1 | Q 4. | Page 106

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

The area of a rectangular is 640 m2. Taking its length as x cm; find in terms of x, the width of the rectangle. If the perimeter of the rectangle is 104 m; find its dimensions.


A footpath of uniform width runs all around the outside of a rectangular field 30 m long and 24 m wide. If the path occupies an area of 360 m2, find its width.


Calculate the area of the figure given below:

Which is not drawn scale.


The length of a rectangular verandah is 3 m more than its breadth. The numerical value of its area is equal to the numerical value of its perimeter.

(i) Taking x as the breadth of the verandah, write an equation in x that represents the above statement

(ii) Solve the equation obtained in (i) above and hence find the dimensions of the verandah. 


The floor of a room is of size 6 m x 5 m. Find the cost of covering the floor of the room with 50 cm wide carpet at the rate of Rs.24.50 per metre. Also, find the cost of carpeting the same hall if the carpet, 60 cm, wide, is at the rate of Rs.26 per metre.


In the following, find the value of ‘a’ for which the given points are collinear

(2, 3), (4, a) and (6, – 3)


In the following, find the value of ‘a’ for which the given points are collinear

(a, 2 – 2a), (– a + 1, 2a) and (– 4 – a, 6 – 2a)


The quadrilateral swimming pool shown is surrounded by concrete patio. Find the area of the patio


Find the area of quadrilateral BCEG


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×