Answer:
Length of grey rod is
th of the white rod.
Step-by-step explanation:
Let the length of each black rod = b units
Length of 2 black rods = 2b
Length of each grey rod will be = g units
Length of 3 grey rods = 3g
Since, length of 2 black rods = length of 3 grey rods
2b = 3g ----- (1)
Length white rod = Length of 2 black rods + Length of 3 grey rods
w = 2b + 3g
From the equation (1),
w = 2b + 2b
= 4b
b = 
Therefore, length of grey rod is
th of the white rod .
Answer:
B is the correct answer
Step-by-step explanation:
I think
*FORMULA*
Qu1.

Height=10
Base=8


Qu2.
Area of a kite=half×product of digonals
Step by step solution
Summation of 1st diagonal =5+5
=10
Summation of 2nd diagonal =7+5
=12
Product of the diagonals
=10×12
=120
Area=1÷2×120
=60
X/y
- 8/20=42/y
- 0.4=42/y
- y=42/0.4
- y=105
The correct answer should be D