Mathematics Education 2012 A State University Of Surabaya By Group 14 th Leny Fitryasari (123174012) Muhammad Naufal Faris (123174229) By Group 14 th Leny.

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Mathematics Education 2012 A State University Of Surabaya By Group 14 th Leny Fitryasari ( ) Muhammad Naufal Faris ( ) By Group 14 th Leny Fitryasari ( ) Muhammad Naufal Faris ( ) Mathematics in Daily Life

Do you know Bedugul lake????

Bedugul lake located in the village Candikuning, Tabanan, Bali. Bedugul lake located at a height of more than 1000 meters from the surface of the sea. In the middle of the Bedugul lake, there is a temple namely Ulun Danu temple.

Ulun Danu Temple

Ulun Danu Temple is a temple located in the village Candikuning, Tabanan, Bali. This temple was built in 1663 in several islands. This is the central praying temple to the Sang Hyang Dewi Danu, for give prosperity.

Ulun Danu Temple while the tide Ulun Danu Temple while low tide

Ulun Danu Temple seen at day Ulun Danu Temple seen at evening

Ulun Danu Temple as the symbol of our money

Bedugul Botanical Garden

Ulun Danu Temple consist of trapezoids and pyramid Trapezoid Pyramid

Trapezoid Trapezoid is a quadrilateral which has one pair of parallel side. AB and CD is parallel. AD and BC are hypotenuse. a b

Formula Heigh t Surface Area The Parallel Side t b a

One trapezoid of Ulun Danu Temple at the bottom side has AB = 5 m, CD = 3 m and hypotenuse = 2m. The surface area of one trapezoid is 1 m 3 m 5 m 2 m D C A B 1 m t

1m1m 1m1m 3m3m 5m5m 2m2m 2m2m Because there are 4 trapezoid in the bottom of Ulun Danu Temple, so the surface area of 4 trapezoid is

D B A C E F G Pyramid Pyramid – A three dimensional figure that the base is quadrilateral and the lateral face is triangle. Vertex Height Slant Height Perimeter

Formula Surface Area D B A C E L B F Lateral Area Base Perimeter Slant Height Base Area Lateral Area

Pyramid of Ulun Danu Temple has AB = 1 m, EC = 1m. The surface area of pyramid is t 1 m 0,5 m A E D C B F

A C E D B F G L B

1. Calculate the surface area of the pyramid with a perpendicular height 12 cm and base edge 10 cm.

5 cm 12 cm 5 cm

2. Calculate the hypotenuse of trapezoid if given the surface area is 189 cm cm 9 cm

18 cm 9 cm 14 cm