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3 years ago

A rectangle has an area of 235.2m squared. One of the sides is 2.8m in length. work out the perimeter of the rectangle, please?

Mathematics

1 answer:

ehidna [41]3 years ago

6 0

Answer:

Steps:

given:

A = 235.2 m²

S1 = 2.8 m

S2 = A/S1

S2 = 235.2/2.8

S2 = 84 m

P = 2(S1+S2)

P = 2(2.8+84)

P = 2 × 86.8

P = 173.6 m

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Step-by-step explanation:

First, you need to complete the square:

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↑ ↓ ↑

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y - $\frac{12}{12}$ - $\frac{25}{12}$ = -3(x + $\frac{5}{6}$ )²

y - $\frac{37}{12}$ = -3(x + $\frac{5}{6}$ )²

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Now, it is in the form of y = a(x - h)² + k where (h, k) is the vertex

Vertex = $(-\frac{5}{6}$ , $\frac{37}{12})$

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