How big is a right-angled triangle's area? I.The triangle's perimeter is 30 cm. II. The triangle's base and height have a 5:12 ratio. III.The size of the triangle is the same as the area of a 10 cm long rectangle.
A. I and II only
B. II and III only
C. I and III only
D. III, and either I or II only
Answer:A
How big is a right-angled triangle's area? I.The triangle's perimeter is 30 cm. II. The triangle's base and height have a 5:12 ratio. III.The size of the triangle is the same as the area of a 10 cm long rectangle.
A. I and II only B. II and III only C. I and III only D. III, and either I or II only