Pleaseee answer this!!!!

Mathematics

1 answer:

MariettaO [177]2 years ago

3 0

Answer:

2162 cm²

Step-by-step explanation:

the area of shaded gray = the area of the big rectangle-the area of the small rectangle

= 42×63-22×22

=2646-484

=2162 cm²

You might be interested in

Sin theta = 24/25, cos theta > 0, Find cos(2theta)

Norma-Jean [14]

Well... you don't necessarily need to get the cosine value, in order to get the double angle

$\bf \textit{Double Angle Identities}
\\ \quad \\
sin(2\theta)=2sin(\theta)cos(\theta)
\\ \quad \\\\
cos(2\theta)=
\begin{cases}
cos^2(\theta)-sin^2(\theta)\\
\boxed{1-2sin^2(\theta)}\\
2cos^2(\theta)-1
\end{cases}
\\ \quad \\\\
tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\\\\
-------------------------------\\\\
cos(2\theta )=1-2sin^2(\theta )\qquad \qquad sin(\theta )=\cfrac{24}{25}
\\\\\\
cos(2\theta )=1-2\left( \cfrac{24}{25} \right)^2\implies cos(2\theta )=-0.8432$

4 0

3 years ago

Read 2 more answers

1. If α and β are the zeroes of a polynomial such that α + β = -6 and αβ = 5, then find the polynomial.

creativ13 [48]

Answer:

${x}^{2} + 6x + 5$