A trapezoidal piece of plywood is used in a stage decoration.
Find its area if the bases are 80 cm and 140 cm, and its altitude is 50 cm.
2006-12-27 23:59:51 · 5 answers · asked by Hybrid Angel 2 in Science & Mathematics ➔ Mathematics
given,
bases,let a=80cm , b=140cm
altitude (h)=50cm
area of trapezoidal plywood is=1/2h(a+b)
=1/2*50*(80+140)
=25*220
=5500cmsq.
therefore area=5500cmsq.
2006-12-28 00:26:54 · answer #1 · answered by shreya i 2 · 0⤊ 0⤋
Area = h(b1 + b2)/2
=50(80+140)/2
=50(220)/2
= 25(220) = 5500 cm^2
2006-12-28 08:08:10 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
area = 1/2*[b1+b2]*h
=1/2*230*50
=560 cm^2
2006-12-28 10:59:33 · answer #3 · answered by dhruv_dshmkh 1 · 0⤊ 0⤋
(1/2)*sum of parallel sides*height
1/2*(140+80)*50=5500cm^2
2006-12-28 08:07:05 · answer #4 · answered by miinii 3 · 0⤊ 0⤋
Area=0.5*h*(b1+b2)
=0.5*50*220
25*220=5500sqare centimeter.
2006-12-28 11:02:09 · answer #5 · answered by Nitin T F1 fan 5 · 0⤊ 0⤋