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t1 / t1 + 24 = 5/15
3t1 = t1 + 24
3t1 - t1 = 24
2t1 = 24
t1 = 12 cm
s1 = 13 cm
t2 = 24 cm + 12 cm = 36 cm
S2² = t2² + 15²
S2² = 36² + 15²
S2² = 1296 cm + 225 cm
S2 = √1521
S2 = 39 cm
Cb1 = πrs
= π x 5 cm x 13 cm
= 65π cm²
Cb2 = πrs
= π x 15 cm x 39 cm
= 585π cm²
L = Cb2 - Cb1
585π cm² - 65π cm²
= 520π cm²

6 / x² + 2x - 8 + 1 / x + 4
6 / ( x + 4 ) ( x - 2 ) + 1 / x + 4
6 / ( x + 4 ) ( x - 2 ) + 1 ( x - 2 ) / ( x + 4 ) ( x - 2 )
6 + x - 2 / ( x + 4 ) ( x - 2 ) = x + 4 / ( x + 4 ) ( x - 2 )
= 1 / x - 2

f ( x - 2 ) = 3x - 4
f ( p ) = ?
x - 2 = p
x = p + 2
3x - 4 = 3 ( p + 2 ) - 4
= 3p + 6 - 4
= 3p + 2

L1 = LT ABE - LT ABC
= ( ½ x g x h ) - ( ½ x g x h )
= ( ½ x 5 x 12 ) - ( ½ x 5 x 4 )
= 30 cm² - 10 cm²
= 20 cm²
L2 = LT ABD - LT ABC
= ( ½ x 5 x 8 ) - ( ½ x 5 x 4 )
= 20 cm² - 10 cm²
= 10 cm²
L = L¹ + L²
= 20 cm² + 10 cm²
= 30 cm²

surds, linear equations, measurement etc... funnnnnn