Question
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 5cm, BC = 7cm then what is BD:CD?
By Internal angle bisector theorem, AB:AC = BD:CD So, 5: x = BD:CD => 5 + x = BC [BD+CD = BC] => 5 + x = 7 => x = 2 BD:CD = 5:2More Mensuration Questions
- The breadth of a rectangular hall is 5/16 of its length. If the area of the floor is 80 sq. m., then the difference between the length and breadth of the h...
- Due to economic surge the price of eggs suddenly reduced by 40%. This enabled a woman to buy 64 more for $30. Then the reduced price per dozen is :
- A rectangular field is 40 m long and 25 m wide. Find the cost of fencing it three times all around at the rate of Rs. 12 per metre.
- If the radius of a cylinder is 20 cm and its curved surface area is 660 cm2 then find the height of the cylinder?
- The ratio of length and breadth of a rectangular field is 5:3. If the total cost of surrounding it at the rate of Rs 7.50 per meter is Rs 3000, then find t...
- <p>&lt;p&gt;The number of students in a school is 4217. If the ratio between boys to girls is (x+5) : (x+8), then find the value of x.&lt...
- Find the surface area of the smallest cube that can perfectly fit a sphere of volume 18432π cm3 inside it.
- Find the difference between the area of circular land having diameter 28 metres and the area of a rectangular piece of land with length and breadth of 18 m...
- A solid cylinder of radius 4 cm and height 9 cm is melted and recast into right circular cones of radius 2 cm and height 6 cm. How many such cones can be m...
- Find the area of sector of a circle whose radius is 21 cm and angle subtended by the sector at centre of circle is 45 ° .
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
