標題:

MATHS之選擇題(英文的)

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• 韓版花樣男子 22集插曲
• 請問師奶我最大5月26號的幸運號碼是多少- 謝謝@1@
• Can I go to top 30 universities of U.K-

 

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發問:

1. The perimeter of a triangle is 30 cm. If each side of the triangle is increased by 3 cm, what is the new perimeter of the triangle? A. 33 cm B. 36 cm C. 39 cm D. 42 cm2. Which of the following angles cannot be constructed by a pair of compasses and a ruler? A. 22.5° B. 33° C.... 顯示更多 1. The perimeter of a triangle is 30 cm. If each side of the triangle is increased by 3 cm, what is the new perimeter of the triangle? A. 33 cm B. 36 cm C. 39 cm D. 42 cm 2. Which of the following angles cannot be constructed by a pair of compasses and a ruler? A. 22.5° B. 33° C. 45° D. 60° 呢幾條題來自 Train Up MATHEMATICS 1 (S.1-S.2)

最佳解答:

Question 1: A triangle has 3 sides. So, if each side of the triangle is increased by 3 cm. Then the perimeter is increased by 3 X 3 = 9 cm So, new perimeter of the triangle = 30 + 9 = 39 cm Therefore, the answer is C. 39 cm. Question 2 The answer is B. 33°

其他解答:

C. 39 cm A. 22.5°