Mathematics Question and Solution
a = 1+3
a = 4 cm²
b² = 4
b = 2 cm.
0.5*2c = 1
c = unit.
d² = 1²+2²
d = √(5) units.
It implies;
√(5) - 1
1 - e
Cross Multiply.
e = 1/√(5)
e = ⅕√(5) units.
f = d+e
f = √(5)+⅕√(5)
f = ⅕(6√(5)) units.
Again;
√(5) - 1
2 - g
Cross Multiply.
g = ⅕(2√(5)) units.
Therefore, Blue Area is;
Area square with side ⅕(6√(5)) units - Area triangle with height ⅕√(5) units and base ⅕(2√(5)) units - 3 cm²
= (⅕(6√(5)))²-(½*⅕√(5)*⅕(2√(5)))-3
= ⅕(36)-⅕-3
= ⅕(36-1-15)
= ⅕(20)
= 4 cm²
