Question

D:?
d=12cm
E=1:2500000

ajude-me porfavor ​

Answer 1

$\large\boxed{\begin{array}{l}\underline{\rm De~\!\!finic_{\!\!,}\tilde ao\,de\,escala}\\\sf relac_{\!\!,}\tilde ao\,entre\,o\,comprimento\,no\,desenho\\\sf e\,o\,comprimento\,real.\\\sf matematicamente:\\\sf E=\dfrac{d}{D}\\\sf E\longrightarrow escala\\\sf d\longrightarrow comprimento\,no\,desenho\\\sf D\longrightarrow comprimento\,real.\end{array}}$

$\large\boxed{\begin{array}{l}\begin{cases}\sf E=1:2500000\implies E=\dfrac{1}{2500000}\\\sf d=12\,cm\\\sf D=?\end{cases}\\\underline{\rm soluc_{\!\!,}\tilde ao\!:}\\\sf E=\dfrac{d}{D}\\\\\sf\dfrac{1}{2500000}=\dfrac{12}{D}\\\\\sf D=2500000\cdot12\\\sf D=30000000cm\div100000=300\,km\end{array}}$