Question

the surface of a pyramid whose base is regular polygon is 220cm square and area of its base 60cm square find the total number of lateral faces the pyramid has if the area of each lateral faces os 20 cm square ​

Answer 1

Answer:

Total surface area = Lateral surface area + area of base

220 = Lateral surface area + 60

Lateral surface area = 220 - 60 = 160 cm ^{2}160cm

2

Area of each Lateral surface = 20cm^{2}20cm

2

Number of Lateral surfaces = 160/20 = 8

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Answer 2

Answer:

8

Total surface area = Lateral surface area + area of base

220 = Lateral surface area + 60

Lateral surface area = 220 - 60 = 160 cm ^{2}160cm

2

Area of each Lateral surface = 20cm^{2}20cm

2

Number of Lateral surfaces = 160/20 = 8

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