Page 5 - Activity

25. Then the ratio of their corresponding heights is
(a) 16 : 25
(b) 256 : 625
(c) 4 : 5
(d) none of these

Question 5.
∆ABC ~ ∆DEF. If AC = 19 cm and DF = 8 cm, then the ratio of the areas of the two
triangles is
(a) 361 : 64
(b) 19 : 8
(c) 19 : 4
(d) none of these

Question 6.
In the given figure, PB and QA are perpendicular to segment AB. If PO = 5 cm, QO = 7
cm and area (∆POB) = 150 cm , then area of ∆QOA is
2

(a) 254 cm
2
(b) 294 cm
2
(c) 244 cm
2
(d) 49 cm
2
Question 7.
Diagonals of a trapezium ABCD with AB || DC intersect each other at the point O. If AB
= 2CD, find the ratio of the areas of triangles AOB and COD.
(a) 4:1
(b) 1:4
(c) 4:4
(d) 2:4

Question 8.
ABC and DBC are two triangles on the same base BC. If AD intersects BC at O, then
the ratio of area (∆ABC) to area (∆DBC) is
(a)
(b)
(c)
(d) None of these