Answer:
60cm
Step-by-step explanation:
Length of 1 side = 5cm [ A cube has 12 edges]
Length of 12 sides = 5*12
= 60cm
Answer:
10m
Step-by-step explanation:
Use the area of triangle:
Area of triangle =

1/2 × b × 3 = 15
b × 3 = 30
b = 30/3
b = 10
Answer:
129
Step-by-step explanation:
all u have to do is add those two numbers
30×1.6=48 so the answer is 48