3 years ago

Card

Mathematics

1 answer:

Burka [1]3 years ago

6 0

Answer:

19,27 cm^2

Step-by-step explanation:

area of triangle = (6 x 3)/ 2 = 9 cm^2

circle area : 3^2 x 3,14 = 28,27 cm^2

area of shaped region = 28,27 - 9 = 19,27 cm^2

You might be interested in

Find the area of the surface. the part of the paraboloid z=4-x^2-y^2 that lies above the xy-plane

11Alexandr11 [23.1K]

Parameterize the surface (call it $\mathcal S$ ) by

$\mathbf s(u,v)=\langle u\cos v,u\sin v,4-u^2\rangle$

with $0\le u\le2$ and $0\le v\le2\pi$ . Then the surface element is

$\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|=u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv$

The area of $\mathcal S$ is then given by the surface integral

$\displaystyle\iint_{\mathcal S}\mathrm dS=\int_{v=0}^{v=2\pi}\int_{u=0}^{u=2}u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv$
$=\displaystyle2\pi\int_{u=0}^{u=2}u\sqrt{1+4u^2}\,\mathrm du=\dfrac{(17^{3/2}-1)\pi}6\approx36.1769$

6 0

2 years ago

Use two fractions to write an expression with an estimated sum of 2

Ivenika [448]

Dear Mathee2, you can do 1/10+1 8/10≈2 and 1/20+1 19/20≈2. Note: you said fractions, so did you want the fractions to be mixed numbers or improper fractions?

5 0

3 years ago

Holly spends

maks197457 [2]

Answer:

dsg

Step-by-step explanation:

4 0

3 years ago

Five boxes of fruit snacks cost $22.50.

Viefleur [7K]

Answer: