A toy is in Shape of a square pyramid of base edge 16 cm and slant height 10 cm. What is the total cost of painting 500 such toys,at 80 rupees per square metre?
Please help
Answers
Answer:
Given: side of a square = 16cm
Slant Height (l) = 10 cm
We know that,
Surface area of a pyramid
Where, p = perimeter of the base
l = slant height
A = area of the base
Area of a square base (A) = side × side
= 16 × 16
Area of a square base (A) = 256 cm2
Perimeter of a square base (p) = 4 × side
= 4 × 16
Perimeter of a square base (p) = 64 cm
Since, Surface area of a pyramid
⇒ Surface area of a pyramid
Total surface area of pyramid shaped toys = 500 × 576
= 288000cm2
= 28.8m2
Cost of 1m2 = 80Rs.
Cost of 28.8m2 = 28.8 × 80 = 2304 Rs.
Answer:
Step-by-step explanation:Given: side of a square = 16cm
Slant Height (l) = 10 cm
We know that,
Surface area of a pyramid
Where, p = perimeter of the base
l = slant height
A = area of the base
Area of a square base (A) = side × side
= 16 × 16
Area of a square base (A) = 256 cm2
Perimeter of a square base (p) = 4 × side
= 4 × 16
Perimeter of a square base (p) = 64 cm
Since, Surface area of a pyramid
⇒ Surface area of a pyramid
Total surface area of pyramid shaped toys = 500 × 576
= 288000cm2
= 28.8m2
Cost of 1m2 = 80Rs.
Cost of 28.8m2 = 28.8 × 80 = 2304 Rs.
thank you guys mark hunter