Question
Four boys and nine girls can
complete a task in 24 days. Three boys and five girls can finish the same task in 36 days. How many days will it take for six boys and six girls to complete the same task?Solution
ATQ, Let no of boys be 'b' and no of girls be 'g' (4b+9g)24 = (3b+5g)36 (4b+9g)2 = (3b+5g)3 8b+18g = 9b+15g b = 3g 21g × 24 = 24g × number of days taken Number of days taken = 21 days
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 7 cm, BC = 9cm then what is BD:CD?
A triangle ABC is inscribed in a circle with radius 10 cm. The sides of the triangle are AB = 12 cm, BC = 16 cm, and AC = 20 cm. Find the area of the tr...
What is the ∠ SRO if O is the centre of circle, ∠ SPO = 55Ëš and ∠ POR = 115 Ëš
The sides of a triangle are 10 cm, 17 cm, and 21 cm. Find the area of the triangle using Heron’s formula.
The length of the each side of an equilateral triangle is 42√3 cm . The area of circumcircle, (cm 2 ) is
Let G be the centroid of the equilateral triangle ABC of perimeter 24 cm. Then the length of AG is
In the given figure, Ab = 30 cm and CD = 24 cm. What is the value (in cm) of MN?
Angles of a triangle are in the ratio 1 : 2 : 3. Find the measure of the largest angle.
