If a parallelogram with area `P`, a rectangle with area `R` and a triangle with area `T` are all constructed on the same base and all have the same altitude, then which of the following statements is `"false"`? (a) `P=R` (b) `P+T=2R` (c) `P=2T` (d) `T=1/2R`

If P,R,T are the area of a parallelogram , a rhombus and a triangle standing on the same base and between the same parallels, which of the following is true ?

If P, R, T are the area of a Parallelogram, a rhombus and a triangle standing on the same base and between the same parallels, which of the following is true ?

If p is any statement,t and c are a tautology and a contradiction respectively then which of the following is not correct- (a) p^^t=p(b)p^^c=c(c)p vv t=c(d)p vv c=p

Let p,q,r be the altitudes of a triangle with area S and permeter 2t . Then , the value of (1)/(p)+(1)/(q)+(1)/(r) is

In a triangle P Q R , let /_P Q R=30o and the sides P Q and Q R have lengths 10sqrt(3) and 10, respectively. Then, which of the following statement(s) is (are) TRUE? /_Q P R=45o (b) The area of the triangle P Q R is 25sqrt(3) and /_Q R P=120o (c) The radius of the incircle of the triangle P Q R is 10sqrt(3)-15 (d) The area of the circumcircle of the triangle P Q R is 100 pi

p, q, r, s, t, are five numbers such that the average of p,q and r is 5 and that of s and t is 10. What is the average of all the five numbers ?