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wlad13 [49]
3 years ago
13

20 POINTS FOR ANY ONE ThAT CAN ANSWER

Mathematics
2 answers:
Inga [223]3 years ago
7 0

Answer:

Step-by-step explanation:

Perpendicular height will split the base into two equal parts.

Use Pythagorean theorem,

hypotenuse² = base² + altitude²

                     = 28² + 45²

                    = 784 + 2025

                   = 2809

hypotenuse = √2809 = √53 * 53 = 53 mm

Perimeter = 53 + 53 + 56 = 162mm

Vsevolod [243]3 years ago
7 0

Answer:

Step-by-step explanation:

each side of smaller triangle = √(28²+45²) = 53 mm

(larger base)/(smaller base) = 168/56 = 3

each side of larger triangle = 3×53 = 159

perimeter of larger triangle = 159+159+168 = 486 mm

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