English

What is the area of the largest triangle that can be fitted into a rectangle of length l units and width w units? - Mathematics

Advertisements
Advertisements

Question

What is the area of the largest triangle that can be fitted into a rectangle of length l units and width w units?

Options

  • `(lw)/2`

  • `(lw)/3`

  • `(lw)/6`

  • `(lw)/4`

MCQ

Solution

`bb((lw)/2)`

Explanation:


Let ABCD be the rectangle of length l and width w.

Now, we construct a triangle of maximum area inside it in all possible ways.

∵ We know that,

Area of triangle = `1/2` × Base × Height

So, for maximum area, base and height of maximum, length is needed.

Here, maximum base length = `l`

And maximum height = w

∴ Area (maximum) of triangle = `1/2 xx l xx w = (l xx w)/2` sq.units

shaalaa.com
  Is there an error in this question or solution?
Chapter 11: Mensuration - Exercise [Page 345]

APPEARS IN

NCERT Exemplar Mathematics [English] Class 8
Chapter 11 Mensuration
Exercise | Q 4. | Page 345

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

A cistern, internally measuring 150 cm × 120 cm × 110 cm, has 129600 cm3 of water in it. Porous bricks are placed in the water until the cistern is full to the brim. Each brick absorbs one-seventeenth of its own volume of water. How many bricks can be put in without overflowing the water, each brick being 22.5 cm × 7.5 cm × 6.5 cm?


A solid metallic sphere of diamter 16 cm is melted and recasted into smaller solid cones, each of radius 4 cm and height 8 cm. Find the number of cones so formed.


A tent is in the form of a right circular cylinder surmounted by a cone. The diameter of cylinder is 24 m. The height of the cylindrical portion is 11 m while the vertex of the cone is 16 m above the ground. Find the area of canvas required for the tent.


Lead spheres of diameter 6 cm are dropped into a cylindrical beaker containing some water and are fully submerged. If the diameter of the beaker is 18 cm and water rises by 40 cm. find the number of lead spheres dropped in the water.


If the radii of the circular ends of a bucket of height 40 cm are of lengths 35 cm and 14 cm, then the volume of the bucket in cubic centimeters, is


A solid metallic spherical ball of diameter 6 cm is melted and recast into a cone with diameter of the base as 12 cm. The height of the cone is


Water in a canal, 6 m wide and 1.5 m deep, is flowing at a speed of 4 km/hr. How much area will it irrigate in 10 minutes if 8 cm of standing water is needed for irrigation?


A sphere of diameter 18 cm is dropped into a cylindrical vessel of diameter 36 cm, partly filled with water. If the sphere is completely submerged, then the water level rises by ______.


There is a circular pond and a footpath runs along its boundary. A person walks around it, exactly once keeping close to the edge. If his step is 66 cm long and he takes exactly 400 steps to go around the pond, find the diameter of the pond.


A bicycle wheel makes 500 revolutions in moving 1 km. Find the diameter of the wheel.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×