Tolong Bantu Secepatnya
a. 150 cm²
b. 40 cm²
c. 190 cm²
Penjelasan dengan langkah-langkah:
a. SQ² = PQ² - PS²
= 25² - 15²
= 625 - 225
= 400
SQ = √400 = 20 cm
L ∆PSQ = 1/2 x PS x SQ
= 1/2 x 15 x 20
= 150 cm²
b. L.∆SRQ = 1/2 x SQ x TR
= 1/2 x 20 x 4
= 40 cm²
c. L.PQRS = 150 cm² + 40 cm²
= 190 cm²
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