Question

97
Q4. Find the missing values:
Base Height Area of Triangle
(a) 15 cm
87 cm?
(b)
31.4 mm
1256 mm
(c) 22 cm
170 cm
Sol. (a) Given, base (b) = 15 cm
and area of triangle = 87 cm​

Answer 1

Answer:

Hope it helps!! Mark this answer as brainliest if u found it useful.

Explanation:

(a) Given, Base = 15cm, Area of triangle = 87 cm^2, Height = ?

Area of triangle = 1 /2×Base× Height

Or,  87 = 1/2 * 15 * height

∴ height = 87 * 2 / 15 = 11.6   cm

(b) Given, Height = 31.4 mm, Area of triangle = 1256 mm2, Base = ?

Area of triangle = 1 /2×Base× Height

Or,  1256 = 1/2 * Base * 31.4

∴ base = 1256 * 2 / 31.4 =  80   mm

(c) Given, Base = 22cm, Area of triangle = 170.5 cm2, Height = ?

Area of triangle = 1 /2×Base× Height

Or,  170.5 = 1/2 * 22 * height

∴ height = 170.5 * 2 / 22= 15.5 cm