Question

a. find the value of x.
15: x = 25: 40
b. Express the ratios in simplest form.
i) 45 cm to 2 m
ii) 54 minutes to 2 hours
c. Classify given triangles as isosceles, scalene, or equilateral.
i) 45cm, 61 cm, 60 cm.
ii) 89 cm, 89cm, 89 cm.
iii) 30cm, 31cm, 30cm.
d. The perimeter of an equilateral triangle is 18 units. Find its area.

Answer 1

Step-by-step explanation:

a) x * 40 = 25 x 15

x = (25*15)/40

x = 75/8

b) 45:200 = 9:40

c) i. scalen triangle

ii. equilateral triangle

iii. isosceles triangle

d) (a+b)/2 = 18

(a+a)/2 = 18. [as equilateral triangle has same sides]

a= 18

area of triangle = 3a = 3x18 = 44 unit square.

Answer 2

Answer:

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