Question

Similar triangles can be used for many different things in real life . It is used
in aerial photography to see the distance from the sky to the ground . Aerial
photography is the taking of photographs from an aircraft or other flying
objects . Low level aerial photos can be taken using a remote controlled camera
suspended from a blimp .
In figure a remote controlled camera P is used to take a photo that covers a distance
AB which is proportional to base QR .
Here /=ℎ/
Using similarity criterian answer the questions based on it
(i) If h=3cm ,AB = 50 m and QR = 8 cm ,then H =
(a) 18 m (b) 18.75 m (c) 1875 m (d) 875 m
(ii) is similar to
(a) (b) (c) (d)
(iii) Write scale factor of and if h : H = 1 : 110
(a) 1 (b) 110 (c) 1:110 (d) 110 : 1
(iv) If perimeter of is 20 cm ,then perimeter of in m is (using the
above Scale factor)
(a) 2200 m (b) 22 m (c) 2.2

Answer 1

Answer:

Similar triangles can be used for many different things in real life . It is used

in aerial photography to see the distance from the sky to the ground . Aerial

photography is the taking of photographs from an aircraft or other flying

objects . Low level aerial photos can be taken using a remote controlled camera

suspended from a blimp .

In figure a remote controlled camera P is used to take a photo that covers a distance

AB which is proportional to base QR .

Here /=ℎ/

Using similarity criterian answer the questions based on it

(i) If h=3cm ,AB = 50 m and QR = 8 cm ,then H =

(a) 18 m (b) 18.75 m (c) 1875 m (d) 875 m

(ii) is similar to

(a) (b) (c) (d)

(iii) Write scale factor of and if h : H = 1 : 110

(a) 1 (b) 110 (c) 1:110 (d) 110 : 1

(iv) If perimeter of is 20 cm ,then perimeter of in m is (using the

above Scale factor)

(a) 2200 m (b) 22 m (c) 2.2 m (d) 0.