1.

The area of triangle is 18 cm² and the sum of altitude is 12cm. the base and altitude are​

Answer»

Step-by-step explanation:

FORMULA of AREA of ∆ is 1/2 ×BASE× HEIGHT..

18cm^2 = 1/2×base× 12cm

18cm^2 = 6 × base

324= 6× base

324÷6 = base

54= base

Therefore, 54 is the correct answer!!!



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