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ATQ, Let total number of students in the class be '100a'. So, number of adults in the class = 100a X 0.7 = '70a' And, number of adult females in the class = 70a X 0.4 = '28x' So, number of adult males in the class = 70a - 28a = '42a' ATQ; 42a = 105 Or, a = 2.5 So, total number of students in the class = 100 × 2.5 = 250
In ∆ABC , G is the centroid , AB = 5 cm, BC= 8 cm and AC = 7 cm , find GD, where D is the mid-point of BC?
Find the area of triangle having sides in the ratio 4:5:7 & the perimeter of the triangle is 16 cm
∆ABC and ∆DEF are similar and their areas are respectively 16 cm2 and 64 cm 2 . If EF = 6 cm BC is?
A cuboid of size 50 cm × 40 cm × 30 cm is cut into 8 identical parts by 3 cuts. What is the total surface area (in cm2) of all the 8 parts?...
In ΔABC, PQ is parallel to BC If AP: PB= 2:5 and AQ= 2 cm, AC is equal to?
If O is circumcentre of acute angled triangle ABC, if ∠ BOC = 150˚ then ∠ BAC = ?
In ΔABC, PQ is parallel to BC If AP: PB= 3:4 and AQ= 6 cm, AC is equal to?
The area of a field in the shape of a hexagon is 2400 √ 3 m2 ? What will be the cost of fencing it at ₹18.50 per metre?
If I is the incentre of ΔABC , if ∠ BAC = 650 , then what is the measure of ∠ BIC?
