直径
The distance from one side of a circle to the other, passing through the center point. It is a fundamental measurement used in geometry and daily life to describe the size of round objects like plates or pipes.
Exemplos
3 de 5このピザの直径は30センチです。
The diameter of this pizza is 30 centimeters.
太陽の直径は、地球の約109倍です。
The diameter of the sun is approximately 109 times that of the Earth.
ねえ、このボールの直径ってどれくらい?
Hey, what is the diameter of this ball?
Família de palavras
Dica de memorização
The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.
Quiz rápido
円の___は、半径の2倍の長さです。
Correto!
A resposta correta é: 直径
Exemplos
このピザの直径は30センチです。
everydayThe diameter of this pizza is 30 centimeters.
太陽の直径は、地球の約109倍です。
formalThe diameter of the sun is approximately 109 times that of the Earth.
ねえ、このボールの直径ってどれくらい?
informalHey, what is the diameter of this ball?
円の面積を計算するには、直径ではなく半径が必要です。
academicTo calculate the area of a circle, you need the radius, not the diameter.
このパイプの直径は、規格に合わせて50ミリにしてください。
businessPlease ensure the diameter of this pipe is 50mm according to the standards.
Família de palavras
Colocações comuns
Frases Comuns
直径に等しい
equal to the diameter
内径と外径
inner diameter and outer diameter
直径の長さ
the length of the diameter
Frequentemente confundido com
Hankei (radius) is half the distance of the diameter (chokkei).
Enshū (circumference) is the distance around the circle, not across it.
Notas de uso
While commonly used in math, it is also frequently used when buying household items like frying pans, pots, or lightbulbs.
Erros comuns
Learners often confuse 'chokkei' (diameter) with 'hankei' (radius). Also, avoid using 'nagasa' (length) alone when the specific dimension needed is the diameter of a circle.
Dica de memorização
The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.
Origem da palavra
From the kanji 直 (direct/straight) and 径 (path/diameter). It literally means the 'straight path' through a circle.
Padrões gramaticais
Contexto cultural
In Japan, many household goods are categorized by diameter using the unit 'cm' or 'mm', which is essential for home shopping.
Quiz rápido
円の___は、半径の2倍の長さです。
Correto!
A resposta correta é: 直径
Vocabulário relacionado
Palavras relacionadas
抗争
A1A serious struggle or conflict between opposing groups, factions, or organizations. It often implies a prolonged period of resistance, power struggles, or violent feuding.
平和
A1A state of harmony and the absence of conflict, war, or disturbance. It is used to describe both global stability between nations and a quiet, tranquil personal lifestyle or environment.
和平
A1和平 (wahei) refers to a state of peace or the restoration of peace, specifically in a diplomatic or formal context between conflicting parties. Unlike the more general word for peace (平和), it often implies the process of ending a war or dispute through negotiation.
休戦
A1A temporary cessation of fighting or conflict by mutual agreement; a truce or armistice. It indicates a period where parties agree to stop hostile actions, whether in a literal war or a metaphorical argument.
停戦
A1A temporary cessation of fighting or a ceasefire agreement between opposing forces in a conflict. It is used when parties agree to stop hostilities to allow for negotiations, humanitarian aid, or the permanent end of a war.
組織
A1Soshiki refers to a structured group of people working together for a specific purpose, such as a company, institution, or system. It can also refer to biological tissue in a medical or scientific context, describing how cells are arranged.
協会
A1An organized group of people who have the same interest, job, or purpose. It is commonly used for professional bodies, sports leagues, or non-profit organizations that represent a collective interest.
学会
A1An academic society or a professional organization where scholars and researchers share their findings. It also commonly refers to the specific academic conferences or meetings organized by these groups.
法人
A1A legal entity or organization, such as a company or non-profit, that is recognized by law as having rights and duties similar to those of a person. It distinguishes a group or institution from an individual human being in legal and business matters.
組合
A1A formal organization or association formed by individuals or groups with a common interest, most commonly referring to a labor union or a cooperative. It describes a collective body where members work together to achieve shared social, economic, or professional goals.
Comentários (0)
Faça Login para ComentarComece a aprender idiomas gratuitamente
Comece Grátis