Side of a cube is 5 cm, what is the cost of painting, its outer surface at the rate of
₹10 per sq.m ?
Answers
Answered by
1
Answer:
1500₹
Step-by-step explanation:
Given:
Side of a cube(a) = 5cm
Cost of painting = 10₹ per sq.cm.
Solution:
Total Surface Area of a cube = 6a²
Substituting the value of 'a' in the expression- 6a², we get 6(5)²
6(5)² = 6(25)
6cm × 25cm = 150 cm²
Cost of painting it's outer surface = 150cm² × 10₹
= 1500₹
Therefore, cost of painting it's outer surface= 1500₹
Answered by
0
Answer:
given side of a cube=5cm
LSA of cube= 4a²
= 4×(5)²
= 4×25
= 100
rate of painting 1 m²= ₹10
cost = area × rate
= 100×10
= ₹1000
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