Answer:
45238.9 sq m
Step-by-step explanation:
The surface area of a sphere can be found with the equation : 4 *Pi * r^2.
Just input the radius into this equation and you've got your answer.
Answer:
The statement is True
Step-by-step explanation:
Rhombus is a quadrilateral with the following characteristics;
- All sides are congruent by definition.
- The diagonals bisect the angles.
- The diagonals are perpendicular bisectors of each other.
- Adjacent angles are supplementary.
- All the four sides are equal.
Answer:
a). ΔABC ~ ΔBDC
b). m(BD) = 6 units
Step-by-step explanation:
If ΔABC ~ ΔBDC,
a). Ratio of the corresponding sides of both the triangles will be equal.
![\frac{AB}{BD}=\frac{BC}{DC}=\frac{AC}{BC}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7BBD%7D%3D%5Cfrac%7BBC%7D%7BDC%7D%3D%5Cfrac%7BAC%7D%7BBC%7D)
![\frac{BC}{DC}=\frac{AC}{BC}](https://tex.z-dn.net/?f=%5Cfrac%7BBC%7D%7BDC%7D%3D%5Cfrac%7BAC%7D%7BBC%7D)
![\frac{12}{9}=\frac{7+9}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B12%7D%7B9%7D%3D%5Cfrac%7B7%2B9%7D%7B12%7D)
![\frac{4}{3}=\frac{4}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D%3D%5Cfrac%7B4%7D%7B3%7D)
Since Ratio of the corresponding sides are same, therefore, both the triangles are similar.
b). ![\frac{AB}{BD}=\frac{BC}{DC}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7BBD%7D%3D%5Cfrac%7BBC%7D%7BDC%7D)
![\frac{8}{BD}=\frac{12}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7BBD%7D%3D%5Cfrac%7B12%7D%7B9%7D)
BD = ![\frac{9\times 8}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B9%5Ctimes%208%7D%7B12%7D)
BD = 6
Given the area of a square the side length is square root of area, so side is
√252 = √(4*63) = √4 * √63 = 2√63
Answer: the answer is C
Step-by-step explanation: