please please solve last two questions
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1. 3 positive integers in the ratio 2:3:5. The sum of the numbers whose squares are 950.
Let the numbers be 2x, 3x and 5x.
Sum of their squares is (2x)²+(3x)²+(5x)²=950.
4x+9x+25x=950.
38x=950
x=950÷38
x=25.
Now, 2x=2×25=50, 3x=3×25=75, 5x=5×25=125.
Thus, numbers are 50, 75 and 125.
2. Let perimeter of s₁=60m, s₂=144m.
Area of s₁=(perimeter/4)²
Area of s₁=(60/4)²
A of s₁=15²
A of s₁=225m².
Area of s₂=(perimeter/4)²
A of s₂=(144/4)²
Area of s₂=36²
A=1296m².
Area of s₃=Area of s₁+ area of s₂
Area of s₃= 36+1296
Area of s₃=1521m²
Thus, perimeter=√(area)
P=√1521
P=39m.
HOPE THIS HELPS :D
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