Question

19. A student of class X draws a square of side 10 cm on a paper. Then he draws two equilateral
triangles, one with the side of the square as one side, and the other the diagonal of the square
as one side. Later, a few questions came to his mind regarding the sides of the square and that
of triangle. Can you help him?
A
10cm
B
F
10cm
с
D
E
1)
)
i)
The diagonal of the square DB =
a) 15 cm b) 12 cm c) 10 V2 cm d) 12.5 cm
The area of the
square
is
a) 20 cm b) 100 cm? c) 150 cm?
c) 150 cm? d) 200 cm?
Area of the equilateral triangle ADF is.
a) 25 cm? b) 25v2 cm? c) 2573 cm? d) 50 cm?
Area of the equilateral triangle BED is.
a) 50 cm? b) 5073 cmnc) 5072 cm? d) 50 cm?
The ratio of areas of equilateral triangles ADF: BED is.
a) 1:2
b) 2:1
iv)
v)
c) 1: V3
d) 13:1​

Answer 1

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