SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

ABCD is a square. E is the mid-point of BC and F is the mid-point of CD. The ratio of the area of triangle AEF to the area of the square ABCD is 

(a)

1:2

(b)

1:3

(c)

1:4

(d)

3:8


Question ID - 50115 :-

ABCD is a square. E is the mid-point of BC and F is the mid-point of CD. The ratio of the area of triangle AEF to the area of the square ABCD is 

(a)

1:2

(b)

1:3

(c)

1:4

(d)

3:8

1 Answer
5876 Votes
3537

Answer Key : (d) -

Let the length of each square be  units.

 

Then, BC = EC = DF = FC =

 

AE =

 

Similarly AF =

 

EF = EX =

 

AX =

 

Area (?AEF) =

 

Req. ratio = 3:8.



Next Question :

A 15 g mass of nitrogen gas is enclosed in a vessel at temperature 270 C.  Amount of heat transferred to the gas, so that rms velocity of molecules is doubled, is about

 

a.

10 kJ

b.

0.9 kJ

c.

6 kJ

d.

14 kJ


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