I need to find the surface area of a triangular prism. The base, width, and height are given of the surrounding rectangles, but the height of the triangle is not given. The area is not given either. Height of the prism is 7, base and width and length is 5, 3, 4.
Thank ya'll!
Attachments:
Answers
Answered by
2
Answer:
The base of a prism is triangular in shape with sides 3cm, 4cm and 5cm. Find the volume of the prism if its height is 10cm.
Answer
REF.image
Sol:
Vol. of △ ular prism =
Area of △ ular base × height.
∴ Area of triangular base =
area of triangle PQR
By heron's formula.
S=
S(s−a)(s−b)(s−c)
where S=
2
a+b+c
∴Areaof△PQR=
S=
2
3+4+5
=6
S=
6(6−3)(6−4)(6−5)
=
3×2×3×2×1
=6cm
2
∴ vol. of Prism =6×10
=60cm
3
Answer.
Step-by-step explanation:
Please Mark Me As The Branliest One Please....
Attachments:
Similar questions