Question

Help needed please solve​

Answer 1

Perimeter is all sides added together
(a) 11.5 + 13.4 + 9.8 + 12.3 = 47 cm

(b) 19.8 + 15.7 + 11.5 + x = 55.3
Combine like terms and simplify
47 + x = 55.3
X = 8.3 cm

(c) 6x = 67.5
X = 11.25 cm

(d) c = 7.5x
7.5 * 8.95 = $67.13

Answer 2

Explanation:

a) Perimeter = sum of the length of the sides

= 13.4 +9.8 +12.3 +11.5

= 47 cm

b) Perimeter = 55.3 cm

11.5 + 15.7 +19.8 +x = 55.3

47 + x = 55.3

x = 55.3 - 47

x = 8.3 cm

c) Perimeter of regular hexagon = 67.5 cm

Length of one side = 67.5÷ 6

= 11.25 cm

d) Cost of 1 metre = $ 8.95

Cost of 7.5 metres = 8.95 * 7.5

= $ 67.125