If x - y = 3, then what is the value of x3 - y3-9xy?
(A) 18
(B) 27
(C) 3
(D) 9
In ΔABC, AB = AC and ∠B = 40 °, find the value of ∠A.
(A) 40°
(B) 100°
(C) 80°
(D) 10°
If the ratio of the measurements of the three angles of a triangle is 2: 3: 4, then the measurement of its largest angle is.
(A) 40°
(B) 60°
(C) 80°
(D) 120°
The sides of a rectangular plot are in the ratio 5: 4 and its area is equal to 500 sq.m. The perimeter of the plot is:
(A) 80 m
(B) 100 m
(C) 90 m
(D) 95 m
The length and breadth of a rectangular field are in the ratio of 3 : 2 . If the perimeter of the field is 80 m, its breadth (in meters) is:
(A) 18
(B) 16
(C) 10
(D) 24
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