3 years ago

What is the perimeter of the triangle? Round to the nearest tenth.

Mathematics

2 answers:

mixas84 [53]3 years ago

5 0

Answer:

19.8 Units

Step-by-step explanation:

AB = √(3+2)² + (3-0)² = √34 = 5.8

AC = √(-2-(-4))² + (3+3)² = √40 = 6.3

BC = √(3-(-4))² + (0-(-3))² = √58 = 7.6

perimeter = 5.8 + 6.3 + 7.6 = 19.7

Jet001 [13]3 years ago

4 0

Answer: what???

Step-by-step explanation:

You might be interested in

Tính tích phân sau bằng cách dùng tọa độ cực I=∫∫ <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5Csqrt%7Bx%5E%7B2%7D%20%2B

xenn [34]

It sounds like R is the region (in polar coordinates)

R = {(r, θ) : 2 ≤ r ≤ 3 and 0 ≤ θ ≤ π/2}

Then the integral is

$\displaystyle \iint_R\frac{\mathrm dx\,\mathrm dy}{\sqrt{x^2+y^2}} = \int_0^{\pi/2}\int_2^3 \frac{r\,\mathrm dr\,\mathrm d\theta}{\sqrt{r^2}} \\\\ = \int_0^{\pi/2}\int_2^3 \mathrm dr\,\mathrm d\theta \\\\ = \frac\pi2\int_2^3 \mathrm dr \\\\ = \frac\pi2r\bigg|_2^3 = \frac\pi2 (3-2) = \boxed{\frac\pi2}$