19. The area of the square book is 625 cm2. What is the perimeter of the square book?
• 100 cm
B. 90 cm
C. 80 cm
D. 70 cm
20. What is the sum of all the interior angles of a decagon?
A. 1,8000
B. 1,4400
C. 1,080°
D. 9000. pakisagot po sa kuya ko po to itinutulungan ko Lang kuya ko Alam ko may Tao na kasingbait Ng taong sasagot dito thanks
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Answer:
A B
Step-by-step explanation:
19. 25CM X 4 = 100CM
20. 144° X 10 = 1,440°